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12923953 = 72380273
BaseRepresentation
bin110001010011…
…010000110001
3220022121022221
4301103100301
511302031303
61141001041
7214565110
oct61232061
926277287
1012923953
117327a59
1243b3181
1328a6713
141a05c77
1512044bd
hexc53431

12923953 has 8 divisors (see below), whose sum is σ = 15412608. Its totient is φ = 10595904.

The previous prime is 12923947. The next prime is 12923983. The reversal of 12923953 is 35932921.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12923953 - 25 = 12923921 is a prime.

It is a super-2 number, since 2×129239532 = 334057122292418, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12923903) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39976 + ... + 40297.

It is an arithmetic number, because the mean of its divisors is an integer number (1926576).

Almost surely, 212923953 is an apocalyptic number.

It is an amenable number.

12923953 is a deficient number, since it is larger than the sum of its proper divisors (2488655).

12923953 is an equidigital number, since it uses as much as digits as its factorization.

12923953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80303.

The product of its digits is 14580, while the sum is 34.

The square root of 12923953 is about 3594.9899860778. The cubic root of 12923953 is about 234.6740796538.

The spelling of 12923953 in words is "twelve million, nine hundred twenty-three thousand, nine hundred fifty-three".

Divisors: 1 7 23 161 80273 561911 1846279 12923953