23438636 has 24 divisors (see below), whose sum is σ = 44304624. Its totient is φ = 10785600.

The previous prime is 23438629. The next prime is 23438669. The reversal of 23438636 is 63683432.

It is a junction number, because it is equal to n+sod(n) for n = 23438596 and 23438605.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33086 + ... + 33786.

It is an arithmetic number, because the mean of its divisors is an integer number (1846026).

Almost surely, 2^23438636 is an apocalyptic number.

23438636 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

23438636 is a deficient number, since it is larger than the sum of its proper divisors (20865988).

23438636 is a wasteful number, since it uses less digits than its factorization.

23438636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1361 (or 1359 counting only the distinct ones).

The product of its digits is 62208, while the sum is 35.

The square root of 23438636 is about 4841.3465069131. The cubic root of 23438636 is about 286.1831841916.

The spelling of 23438636 in words is "twenty-three million, four hundred thirty-eight thousand, six hundred thirty-six".