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10642013772 = 223131931311471
BaseRepresentation
bin10011110100101000…
…00011111001001100
31000110122211022110020
421322110003321030
5133243323420042
64515555142140
7524501424135
oct117224037114
930418738406
1010642013772
114571159505
12208bba4950
131007a06390
1472d524c8c
154244293ec
hex27a503e4c

10642013772 has 96 divisors (see below), whose sum is σ = 28241310720. Its totient is φ = 3091944960.

The previous prime is 10642013771. The next prime is 10642013779. The reversal of 10642013772 is 27731024601.

It is a super-2 number, since 2×106420137722 (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (10642013771) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 921997 + ... + 933467.

It is an arithmetic number, because the mean of its divisors is an integer number (294180320).

Almost surely, 210642013772 is an apocalyptic number.

10642013772 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 10642013772, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14120655360).

10642013772 is an abundant number, since it is smaller than the sum of its proper divisors (17599296948).

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

10642013772 is a wasteful number, since it uses less digits than its factorization.

10642013772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11823 (or 11821 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 33.

The spelling of 10642013772 in words is "ten billion, six hundred forty-two million, thirteen thousand, seven hundred seventy-two".

Divisors: 1 2 3 4 6 12 13 19 26 38 39 52 57 76 78 114 156 228 247 313 494 626 741 939 988 1252 1482 1878 2964 3756 4069 5947 8138 11471 11894 12207 16276 17841 22942 23788 24414 34413 35682 45884 48828 68826 71364 77311 137652 149123 154622 217949 231933 298246 309244 435898 447369 463866 596492 653847 871796 894738 927732 1307694 1789476 2615388 2833337 3590423 5666674 7180846 8500011 10771269 11333348 14361692 17000022 21542538 34000044 43085076 46675499 68218037 93350998 136436074 140026497 186701996 204654111 272872148 280052994 409308222 560105988 818616444 886834481 1773668962 2660503443 3547337924 5321006886 10642013772