23734138890 has 64 divisors (see below), whose sum is σ = 71017482240. Its totient is φ = 4931768640.

The previous prime is 23734138877. The next prime is 23734138921. The reversal of 23734138890 is 9883143732.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5134950 + ... + 5139569.

It is an arithmetic number, because the mean of its divisors is an integer number (1109648160).

Almost surely, 2^23734138890 is an apocalyptic number.

23734138890 is an abundant number, since it is smaller than the sum of its proper divisors (47283343350).

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

23734138890 is a wasteful number, since it uses less digits than its factorization.

23734138890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10274547.

The product of its (nonzero) digits is 870912, while the sum is 48.

The spelling of 23734138890 in words is "twenty-three billion, seven hundred thirty-four million, one hundred thirty-eight thousand, eight hundred ninety".