23622421 has 4 divisors (see below), whose sum is σ = 23633344. Its totient is φ = 23611500.

The previous prime is 23622419. The next prime is 23622427. The reversal of 23622421 is 12422632.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 23622421 - 2¹ = 23622419 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23622392 and 23622401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23622427) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1005 + ... + 6946.

It is an arithmetic number, because the mean of its divisors is an integer number (5908336).

Almost surely, 2^23622421 is an apocalyptic number.

It is an amenable number.

23622421 is a deficient number, since it is larger than the sum of its proper divisors (10923).

23622421 is an equidigital number, since it uses as much as digits as its factorization.

23622421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10922.

The product of its digits is 1152, while the sum is 22.

The square root of 23622421 is about 4860.2902176722. The cubic root of 23622421 is about 286.9292358729.

The spelling of 23622421 in words is "twenty-three million, six hundred twenty-two thousand, four hundred twenty-one".