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12973877 = 721491777
BaseRepresentation
bin110001011111…
…011100110101
3220102010210222
4301133130311
511310131002
61142024125
7215163500
oct61373465
926363728
1012973877
117361514
124418045
1328c3367
141a1a137
1512141a2
hexc5f735

12973877 has 12 divisors (see below), whose sum is σ = 15201900. Its totient is φ = 11039616.

The previous prime is 12973871. The next prime is 12973897. The reversal of 12973877 is 77837921.

It can be written as a sum of positive squares in 2 ways, for example, as 3786916 + 9186961 = 1946^2 + 3031^2 .

It is not a de Polignac number, because 12973877 - 24 = 12973861 is a prime.

It is a super-2 number, since 2×129738772 = 336642968822258, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12973871) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6413 + ... + 8189.

It is an arithmetic number, because the mean of its divisors is an integer number (1266825).

Almost surely, 212973877 is an apocalyptic number.

It is an amenable number.

12973877 is a deficient number, since it is larger than the sum of its proper divisors (2228023).

12973877 is a wasteful number, since it uses less digits than its factorization.

12973877 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1940 (or 1933 counting only the distinct ones).

The product of its digits is 148176, while the sum is 44.

The square root of 12973877 is about 3601.9268454537. The cubic root of 12973877 is about 234.9758659386.

The spelling of 12973877 in words is "twelve million, nine hundred seventy-three thousand, eight hundred seventy-seven".

Divisors: 1 7 49 149 1043 1777 7301 12439 87073 264773 1853411 12973877