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12997070 = 252356509
BaseRepresentation
bin110001100101…
…000111001110
3220110022121222
4301211013032
511311401240
61142323342
7215321222
oct61450716
926408558
1012997070
117377989
124429552
132900a98
141a24782
15121aeb5
hexc651ce

12997070 has 16 divisors (see below), whose sum is σ = 24412320. Its totient is φ = 4972704.

The previous prime is 12997069. The next prime is 12997081. The reversal of 12997070 is 7079921.

12997070 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 12997070.

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, 28025 + ... + 28484.

It is an arithmetic number, because the mean of its divisors is an integer number (1525770).

Almost surely, 212997070 is an apocalyptic number.

12997070 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12997070 is a deficient number, since it is larger than the sum of its proper divisors (11415250).

12997070 is a wasteful number, since it uses less digits than its factorization.

12997070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56539.

The product of its (nonzero) digits is 7938, while the sum is 35.

The square root of 12997070 is about 3605.1449346732. The cubic root of 12997070 is about 235.1158022893.

The spelling of 12997070 in words is "twelve million, nine hundred ninety-seven thousand, seventy".

Divisors: 1 2 5 10 23 46 115 230 56509 113018 282545 565090 1299707 2599414 6498535 12997070