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12972910 = 251578263
BaseRepresentation
bin110001011111…
…001101101110
3220102002111011
4301133031232
511310113120
61142015434
7215160616
oct61371556
926362434
1012972910
117360815
12441757a
1328c2aa2
141a19a46
151213c5a
hexc5f36e

12972910 has 16 divisors (see below), whose sum is σ = 23502816. Its totient is φ = 5155488.

The previous prime is 12972901. The next prime is 12972929. The reversal of 12972910 is 1927921.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2562 + ... + 5701.

It is an arithmetic number, because the mean of its divisors is an integer number (1468926).

Almost surely, 212972910 is an apocalyptic number.

12972910 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12972910 is a deficient number, since it is larger than the sum of its proper divisors (10529906).

12972910 is a wasteful number, since it uses less digits than its factorization.

12972910 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8427.

The product of its (nonzero) digits is 2268, while the sum is 31.

The square root of 12972910 is about 3601.7926092433. The cubic root of 12972910 is about 234.9700278660.

The spelling of 12972910 in words is "twelve million, nine hundred seventy-two thousand, nine hundred ten".

Divisors: 1 2 5 10 157 314 785 1570 8263 16526 41315 82630 1297291 2594582 6486455 12972910