23156065 has 8 divisors (see below), whose sum is σ = 28745640. Its totient is φ = 17885952.

The previous prime is 23156047. The next prime is 23156099. The reversal of 23156065 is 56065132.

It can be written as a sum of positive squares in 4 ways, for example, as 29584 + 23126481 = 172^2 + 4809^2 .

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 23156065 - 2²³ = 14767457 is a prime.

It is an unprimeable number.

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, 79704 + ... + 79993.

It is an arithmetic number, because the mean of its divisors is an integer number (3593205).

Almost surely, 2^23156065 is an apocalyptic number.

It is an amenable number.

23156065 is a deficient number, since it is larger than the sum of its proper divisors (5589575).

23156065 is a wasteful number, since it uses less digits than its factorization.

23156065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159731.

The product of its (nonzero) digits is 5400, while the sum is 28.

The square root of 23156065 is about 4812.0749162913. The cubic root of 23156065 is about 285.0284777125.

The spelling of 23156065 in words is "twenty-three million, one hundred fifty-six thousand, sixty-five".