23067921 has 16 divisors (see below), whose sum is σ = 31426560. Its totient is φ = 15047760.

The previous prime is 23067901. The next prime is 23067931. The reversal of 23067921 is 12976032.

It is not a de Polignac number, because 23067921 - 2⁹ = 23067409 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23067901) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30676 + ... + 31418.

It is an arithmetic number, because the mean of its divisors is an integer number (1964160).

Almost surely, 2^23067921 is an apocalyptic number.

It is an amenable number.

23067921 is a deficient number, since it is larger than the sum of its proper divisors (8358639).

23067921 is a wasteful number, since it uses less digits than its factorization.

23067921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 956.

The product of its (nonzero) digits is 4536, while the sum is 30.

The square root of 23067921 is about 4802.9075568868. The cubic root of 23067921 is about 284.6663624239. Note that the first 3 decimals are identical.

The spelling of 23067921 in words is "twenty-three million, sixty-seven thousand, nine hundred twenty-one".