23136642 has 24 divisors (see below), whose sum is σ = 52768560. Its totient is φ = 7306200.

The previous prime is 23136613. The next prime is 23136649. The reversal of 23136642 is 24663132.

23136642 is a `hidden beast` number, since 2 + 3 + 13 + 6 + 642 = 666.

It is not an unprimeable number, because it can be changed into a prime (23136649) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33484 + ... + 34167.

It is an arithmetic number, because the mean of its divisors is an integer number (2198690).

Almost surely, 2^23136642 is an apocalyptic number.

23136642 is an abundant number, since it is smaller than the sum of its proper divisors (29631918).

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

23136642 is a wasteful number, since it uses less digits than its factorization.

23136642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67678 (or 67675 counting only the distinct ones).

The product of its digits is 5184, while the sum is 27.

The square root of 23136642 is about 4810.0563406264. The cubic root of 23136642 is about 284.9487627189.

Adding to 23136642 its reverse (24663132), we get a palindrome (47799774).

The spelling of 23136642 in words is "twenty-three million, one hundred thirty-six thousand, six hundred forty-two".