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987012054 = 236797997
BaseRepresentation
bin111010110101001…
…001101111010110
32112210020102000000
4322311021233112
54010133341204
6241535032130
733313315110
oct7265115726
92483212000
10987012054
11467162846
1223666b646
13129640602
149512a3b0
155b9b8039
hex3ad49bd6

987012054 has 112 divisors (see below), whose sum is σ = 2565594528. Its totient is φ = 278816256.

The previous prime is 987012043. The next prime is 987012101. The reversal of 987012054 is 450210789.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 989484 + ... + 990480.

It is an arithmetic number, because the mean of its divisors is an integer number (22907094).

Almost surely, 2987012054 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 987012054, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1282797264).

987012054 is an abundant number, since it is smaller than the sum of its proper divisors (1578582474).

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

987012054 is an equidigital number, since it uses as much as digits as its factorization.

987012054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1121 (or 1106 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 987012054 is about 31416.7479857480. The cubic root of 987012054 is about 995.6518052728.

The spelling of 987012054 in words is "nine hundred eighty-seven million, twelve thousand, fifty-four".

Divisors: 1 2 3 6 7 9 14 18 21 27 42 54 63 81 97 126 162 189 194 243 291 378 486 567 582 679 729 873 997 1134 1358 1458 1701 1746 1994 2037 2619 2991 3402 4074 5103 5238 5982 6111 6979 7857 8973 10206 12222 13958 15714 17946 18333 20937 23571 26919 36666 41874 47142 53838 54999 62811 70713 80757 96709 109998 125622 141426 161514 164997 188433 193418 242271 290127 329994 376866 484542 494991 565299 580254 676963 726813 870381 989982 1130598 1353926 1453626 1695897 1740762 2030889 2611143 3391794 4061778 5087691 5222286 6092667 7833429 10175382 12185334 15666858 18278001 23500287 36556002 47000574 54834003 70500861 109668006 141001722 164502009 329004018 493506027 987012054