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13102972 = 223275743
BaseRepresentation
bin110001111110…
…111101111100
3220122200220021
4301332331330
511323243342
61144501524
7216242041
oct61767574
926580807
1013102972
11743a503
12447a8a4
13293a04c
141a511c8
15123c567
hexc7ef7c

13102972 has 6 divisors (see below), whose sum is σ = 22930208. Its totient is φ = 6551484.

The previous prime is 13102967. The next prime is 13102981. The reversal of 13102972 is 27920131.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1637868 + ... + 1637875.

Almost surely, 213102972 is an apocalyptic number.

It is an amenable number.

13102972 is a deficient number, since it is larger than the sum of its proper divisors (9827236).

13102972 is a wasteful number, since it uses less digits than its factorization.

13102972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3275747 (or 3275745 counting only the distinct ones).

The product of its (nonzero) digits is 756, while the sum is 25.

The square root of 13102972 is about 3619.8027570574. The cubic root of 13102972 is about 235.7526614855.

The spelling of 13102972 in words is "thirteen million, one hundred two thousand, nine hundred seventy-two".

Divisors: 1 2 4 3275743 6551486 13102972