23421836 has 12 divisors (see below), whose sum is σ = 41085912. Its totient is φ = 11683008.

The previous prime is 23421823. The next prime is 23421847. The reversal of 23421836 is 63812432.

It is a super-2 number, since 2×23421836² = 1097164803221792, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 23421799 and 23421808.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5030 + ... + 8493.

It is an arithmetic number, because the mean of its divisors is an integer number (3423826).

Almost surely, 2^23421836 is an apocalyptic number.

It is an amenable number.

23421836 is a deficient number, since it is larger than the sum of its proper divisors (17664076).

23421836 is a wasteful number, since it uses less digits than its factorization.

23421836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13960 (or 13958 counting only the distinct ones).

The product of its digits is 6912, while the sum is 29.

The square root of 23421836 is about 4839.6111414038. The cubic root of 23421836 is about 286.1147924607.

The spelling of 23421836 in words is "twenty-three million, four hundred twenty-one thousand, eight hundred thirty-six".