23920638 has 32 divisors (see below), whose sum is σ = 55226880. Its totient is φ = 6765600.

The previous prime is 23920607. The next prime is 23920643. The reversal of 23920638 is 83602932.

It is a junction number, because it is equal to n+sod(n) for n = 23920599 and 23920608.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1423 + ... + 7061.

It is an arithmetic number, because the mean of its divisors is an integer number (1725840).

Almost surely, 2^23920638 is an apocalyptic number.

23920638 is an abundant number, since it is smaller than the sum of its proper divisors (31306242).

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

23920638 is a wasteful number, since it uses less digits than its factorization.

23920638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5752.

The product of its (nonzero) digits is 15552, while the sum is 33.

The square root of 23920638 is about 4890.8729282205. The cubic root of 23920638 is about 288.1316190448.

The spelling of 23920638 in words is "twenty-three million, nine hundred twenty thousand, six hundred thirty-eight".