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102912956 = 22165715527
BaseRepresentation
bin1100010001001…
…01001110111100
321011122112000222
412020211032330
5202321203311
614113440512
72356513526
oct610451674
9234575028
10102912956
1153101033
122a570138
1318423653
14d94ca16
15907cadb
hex62253bc

102912956 has 12 divisors (see below), whose sum is σ = 180217968. Its totient is φ = 51422112.

The previous prime is 102912923. The next prime is 102912961. The reversal of 102912956 is 659219201.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1136 + ... + 14391.

It is an arithmetic number, because the mean of its divisors is an integer number (15018164).

Almost surely, 2102912956 is an apocalyptic number.

It is an amenable number.

102912956 is a deficient number, since it is larger than the sum of its proper divisors (77305012).

102912956 is a wasteful number, since it uses less digits than its factorization.

102912956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17188 (or 17186 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 35.

The square root of 102912956 is about 10144.6023086171. The cubic root of 102912956 is about 468.6227312918.

The spelling of 102912956 in words is "one hundred two million, nine hundred twelve thousand, nine hundred fifty-six".

Divisors: 1 2 4 1657 3314 6628 15527 31054 62108 25728239 51456478 102912956