23478136 has 16 divisors (see below), whose sum is σ = 48023640. Its totient is φ = 10671840.

The previous prime is 23478131. The next prime is 23478163. The reversal of 23478136 is 63187432.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23478131) 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, 133311 + ... + 133486.

Almost surely, 2^23478136 is an apocalyptic number.

It is an amenable number.

23478136 is an abundant number, since it is smaller than the sum of its proper divisors (24545504).

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

23478136 is a wasteful number, since it uses less digits than its factorization.

23478136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266814 (or 266810 counting only the distinct ones).

The product of its digits is 24192, while the sum is 34.

The square root of 23478136 is about 4845.4242332328. The cubic root of 23478136 is about 286.3438575282.

The spelling of 23478136 in words is "twenty-three million, four hundred seventy-eight thousand, one hundred thirty-six".