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23157379 = 79713407
BaseRepresentation
bin101100001010…
…1101010000011
31121120111221201
41120111222003
521412014004
62144202031
7400556140
oct130255203
947514851
1023157379
1112087533
127909317
134a4a5bb
14310b3c7
1520766a4
hex1615a83

23157379 has 8 divisors (see below), whose sum is σ = 26500608. Its totient is φ = 19822920.

The previous prime is 23157373. The next prime is 23157397. The reversal of 23157379 is 97375132.

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 23157379 - 25 = 23157347 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23157373) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5094 + ... + 8500.

It is an arithmetic number, because the mean of its divisors is an integer number (3312576).

Almost surely, 223157379 is an apocalyptic number.

23157379 is a deficient number, since it is larger than the sum of its proper divisors (3343229).

23157379 is an equidigital number, since it uses as much as digits as its factorization.

23157379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4385.

The product of its digits is 39690, while the sum is 37.

The square root of 23157379 is about 4812.2114458947. The cubic root of 23157379 is about 285.0338689615.

The spelling of 23157379 in words is "twenty-three million, one hundred fifty-seven thousand, three hundred seventy-nine".

Divisors: 1 7 971 3407 6797 23849 3308197 23157379