23427021 has 8 divisors (see below), whose sum is σ = 31289440. Its totient is φ = 15591312.

The previous prime is 23427017. The next prime is 23427029. The reversal of 23427021 is 12072432.

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

It is not a de Polignac number, because 23427021 - 2² = 23427017 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23427029) 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, 4531 + ... + 8208.

It is an arithmetic number, because the mean of its divisors is an integer number (3911180).

Almost surely, 2^23427021 is an apocalyptic number.

It is an amenable number.

23427021 is a deficient number, since it is larger than the sum of its proper divisors (7862419).

23427021 is a wasteful number, since it uses less digits than its factorization.

23427021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13355.

The product of its (nonzero) digits is 672, while the sum is 21.

The square root of 23427021 is about 4840.1467952945. The cubic root of 23427021 is about 286.1359037540.

Adding to 23427021 its reverse (12072432), we get a palindrome (35499453).

The spelling of 23427021 in words is "twenty-three million, four hundred twenty-seven thousand, twenty-one".