23139396 has 36 divisors (see below), whose sum is σ = 66847872. Its totient is φ = 6611184.

The previous prime is 23139379. The next prime is 23139407. The reversal of 23139396 is 69393132.

It is a happy number.

23139396 is a `hidden beast` number, since 231 + 39 + 396 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 23139396.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 45660 + ... + 46163.

Almost surely, 2^23139396 is an apocalyptic number.

It is an amenable number.

23139396 is an abundant number, since it is smaller than the sum of its proper divisors (43708476).

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

23139396 is a wasteful number, since it uses less digits than its factorization.

23139396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91840 (or 91835 counting only the distinct ones).

The product of its digits is 26244, while the sum is 36.

The square root of 23139396 is about 4810.3426073410. The cubic root of 23139396 is about 284.9600682743.

The spelling of 23139396 in words is "twenty-three million, one hundred thirty-nine thousand, three hundred ninety-six".