23981634 has 12 divisors (see below), whose sum is σ = 51960246. Its totient is φ = 7993872.

The previous prime is 23981623. The next prime is 23981641. The reversal of 23981634 is 43618932.

It can be written as a sum of positive squares in only one way, i.e., 21594609 + 2387025 = 4647^2 + 1545^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 666139 + ... + 666174.

Almost surely, 2^23981634 is an apocalyptic number.

23981634 is an abundant number, since it is smaller than the sum of its proper divisors (27978612).

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

23981634 is a wasteful number, since it uses less digits than its factorization.

23981634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1332321 (or 1332318 counting only the distinct ones).

The product of its digits is 31104, while the sum is 36.

The square root of 23981634 is about 4897.1046547935. The cubic root of 23981634 is about 288.3763165192.

The spelling of 23981634 in words is "twenty-three million, nine hundred eighty-one thousand, six hundred thirty-four".