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8997051228 = 22311194218521
BaseRepresentation
bin10000110000100010…
…00001101101011100
3212020000112120001120
420120101001231130
5121411221114403
64044434010540
7435645450024
oct103021015534
925200476046
108997051228
1138a7667830
1218b1116a50
13b04c8a069
14614c88a84
15379ce7e53
hex218441b5c

8997051228 has 96 divisors (see below), whose sum is σ = 24167028480. Its totient is φ = 2576448000.

The previous prime is 8997051227. The next prime is 8997051233. The reversal of 8997051228 is 8221507998.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8997051227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1051608 + ... + 1060128.

It is an arithmetic number, because the mean of its divisors is an integer number (251739880).

Almost surely, 28997051228 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8997051228, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12083514240).

8997051228 is an abundant number, since it is smaller than the sum of its proper divisors (15169977252).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8997051228 is a wasteful number, since it uses less digits than its factorization.

8997051228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8979 (or 8977 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 51.

The square root of 8997051228 is about 94852.7871388079. The cubic root of 8997051228 is about 2079.8566244245.

The spelling of 8997051228 in words is "eight billion, nine hundred ninety-seven million, fifty-one thousand, two hundred twenty-eight".

Divisors: 1 2 3 4 6 11 12 19 22 33 38 44 57 66 76 114 132 209 228 418 421 627 836 842 1254 1263 1684 2508 2526 4631 5052 7999 8521 9262 13893 15998 17042 18524 23997 25563 27786 31996 34084 47994 51126 55572 87989 93731 95988 102252 161899 175978 187462 263967 281193 323798 351956 374924 485697 527934 562386 647596 971394 1055868 1124772 1780889 1942788 3561778 3587341 5342667 7123556 7174682 10685334 10762023 14349364 21370668 21524046 39460751 43048092 68159479 78921502 118382253 136318958 157843004 204478437 236764506 272637916 408956874 473529012 749754269 817913748 1499508538 2249262807 2999017076 4498525614 8997051228