23021385 has 16 divisors (see below), whose sum is σ = 36904896. Its totient is φ = 12254528.

The previous prime is 23021359. The next prime is 23021393. The reversal of 23021385 is 58312032.

It is a cyclic number.

It is not a de Polignac number, because 23021385 - 2¹² = 23017289 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9022 + ... + 11288.

It is an arithmetic number, because the mean of its divisors is an integer number (2306556).

Almost surely, 2^23021385 is an apocalyptic number.

It is an amenable number.

23021385 is a deficient number, since it is larger than the sum of its proper divisors (13883511).

23021385 is a wasteful number, since it uses less digits than its factorization.

23021385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2952.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 23021385 is about 4798.0605456788. The cubic root of 23021385 is about 284.4748099511.

The spelling of 23021385 in words is "twenty-three million, twenty-one thousand, three hundred eighty-five".