23504742 has 20 divisors (see below), whose sum is σ = 52668396. Its totient is φ = 7834860.

The previous prime is 23504737. The next prime is 23504743. The reversal of 23504742 is 24740532.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23504743) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 72384 + ... + 72707.

Almost surely, 2^23504742 is an apocalyptic number.

23504742 is an abundant number, since it is smaller than the sum of its proper divisors (29163654).

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

23504742 is a wasteful number, since it uses less digits than its factorization.

23504742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145105 (or 145096 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 27.

The square root of 23504742 is about 4848.1689327003. The cubic root of 23504742 is about 286.4519806585.

The spelling of 23504742 in words is "twenty-three million, five hundred four thousand, seven hundred forty-two".