23403136 has 32 divisors (see below), whose sum is σ = 49082400. Its totient is φ = 11084544.

The previous prime is 23403131. The next prime is 23403151. The reversal of 23403136 is 63130432.

It is a tau number, because it is divible by the number of its divisors (32).

It is not an unprimeable number, because it can be changed into a prime (23403131) 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, 2380 + ... + 7243.

It is an arithmetic number, because the mean of its divisors is an integer number (1533825).

Almost surely, 2^23403136 is an apocalyptic number.

It is an amenable number.

23403136 is an abundant number, since it is smaller than the sum of its proper divisors (25679264).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23403136 is an equidigital number, since it uses as much as digits as its factorization.

23403136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9656 (or 9644 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 22.

The square root of 23403136 is about 4837.6787822260. The cubic root of 23403136 is about 286.0386274787.

Adding to 23403136 its reverse (63130432), we get a palindrome (86533568).

It can be divided in two parts, 2340 and 3136, that added together give a square (5476 = 74²).

The spelling of 23403136 in words is "twenty-three million, four hundred three thousand, one hundred thirty-six".