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7480980 = 223251323139
BaseRepresentation
bin11100100010011010010100
3112002001222100
4130202122110
53403342410
6424202100
7120405303
oct34423224
915061870
107480980
11424a631
122609330
13171c120
14dca43a
159cb8c0
hex722694

7480980 has 144 divisors (see below), whose sum is σ = 25683840. Its totient is φ = 1748736.

The previous prime is 7480937. The next prime is 7481009. The reversal of 7480980 is 890847.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 53751 + ... + 53889.

It is an arithmetic number, because the mean of its divisors is an integer number (178360).

Almost surely, 27480980 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 7480980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12841920).

7480980 is an abundant number, since it is smaller than the sum of its proper divisors (18202860).

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

7480980 is a wasteful number, since it uses less digits than its factorization.

7480980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190 (or 185 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The square root of 7480980 is about 2735.1380221115. The cubic root of 7480980 is about 195.5777735794.

The spelling of 7480980 in words is "seven million, four hundred eighty thousand, nine hundred eighty".

Divisors: 1 2 3 4 5 6 9 10 12 13 15 18 20 23 26 30 36 39 45 46 52 60 65 69 78 90 92 115 117 130 138 139 156 180 195 207 230 234 260 276 278 299 345 390 414 417 460 468 556 585 598 690 695 780 828 834 897 1035 1170 1196 1251 1380 1390 1495 1668 1794 1807 2070 2085 2340 2502 2691 2780 2990 3197 3588 3614 4140 4170 4485 5004 5382 5421 5980 6255 6394 7228 8340 8970 9035 9591 10764 10842 12510 12788 13455 15985 16263 17940 18070 19182 21684 25020 26910 27105 28773 31970 32526 36140 38364 41561 47955 53820 54210 57546 63940 65052 81315 83122 95910 108420 115092 124683 143865 162630 166244 191820 207805 249366 287730 325260 374049 415610 498732 575460 623415 748098 831220 1246830 1496196 1870245 2493660 3740490 7480980