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15420456556 = 226757799721
BaseRepresentation
bin11100101110010000…
…10111111001101100
31110210200022100122121
432113020113321230
5223040114102211
611030053522324
71054063501201
oct162710277154
943720270577
1015420456556
1165a349a27a
122ba43433a4
1315b99a080b
14a63dd1ca8
15603bb9271
hex397217e6c

15420456556 has 24 divisors (see below), whose sum is σ = 27436314416. Its totient is φ = 7581911040.

The previous prime is 15420456529. The next prime is 15420456593. The reversal of 15420456556 is 65565402451.

It is a super-2 number, since 2×154204565562 (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 104776 + ... + 204496.

Almost surely, 215420456556 is an apocalyptic number.

It is an amenable number.

15420456556 is a deficient number, since it is larger than the sum of its proper divisors (12015857860).

15420456556 is a wasteful number, since it uses less digits than its factorization.

15420456556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100369 (or 100367 counting only the distinct ones).

The product of its (nonzero) digits is 720000, while the sum is 43.

The spelling of 15420456556 in words is "fifteen billion, four hundred twenty million, four hundred fifty-six thousand, five hundred fifty-six".

Divisors: 1 2 4 67 134 268 577 1154 2308 38659 77318 99721 154636 199442 398884 6681307 13362614 26725228 57539017 115078034 230156068 3855114139 7710228278 15420456556