23393988 has 96 divisors (see below), whose sum is σ = 63745920. Its totient is φ = 7413120.

The previous prime is 23393987. The next prime is 23394029. The reversal of 23393988 is 88939332.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23393987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 349131 + ... + 349197.

It is an arithmetic number, because the mean of its divisors is an integer number (664020).

Almost surely, 2^23393988 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23393988, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31872960).

23393988 is an abundant number, since it is smaller than the sum of its proper divisors (40351932).

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

23393988 is a wasteful number, since it uses less digits than its factorization.

23393988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194 (or 186 counting only the distinct ones).

The product of its digits is 279936, while the sum is 45.

The square root of 23393988 is about 4836.7331950398. The cubic root of 23393988 is about 286.0013529530.

The spelling of 23393988 in words is "twenty-three million, three hundred ninety-three thousand, nine hundred eighty-eight".