23438988 has 36 divisors (see below), whose sum is σ = 62735400. Its totient is φ = 7353216.

The previous prime is 23438963. The next prime is 23439011. The reversal of 23438988 is 88983432.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18538 + ... + 19761.

It is an arithmetic number, because the mean of its divisors is an integer number (1742650).

Almost surely, 2^23438988 is an apocalyptic number.

It is an amenable number.

23438988 is an abundant number, since it is smaller than the sum of its proper divisors (39296412).

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

23438988 is a wasteful number, since it uses less digits than its factorization.

23438988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38326 (or 38321 counting only the distinct ones).

The product of its digits is 331776, while the sum is 45.

The square root of 23438988 is about 4841.3828602993. The cubic root of 23438988 is about 286.1846168117.

The spelling of 23438988 in words is "twenty-three million, four hundred thirty-eight thousand, nine hundred eighty-eight".