23393920 has 64 divisors (see below), whose sum is σ = 61028640. Its totient is φ = 8504320.

The previous prime is 23393897. The next prime is 23393941. The reversal of 23393920 is 2939332.

It is a tau number, because it is divible by the number of its divisors (64).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5379 + ... + 8701.

Almost surely, 2^23393920 is an apocalyptic number.

23393920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23393920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30514320).

23393920 is an abundant number, since it is smaller than the sum of its proper divisors (37634720).

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

23393920 is a wasteful number, since it uses less digits than its factorization.

23393920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3353 (or 3341 counting only the distinct ones).

The product of its (nonzero) digits is 8748, while the sum is 31.

The square root of 23393920 is about 4836.7261654967. The cubic root of 23393920 is about 286.0010758432.

The spelling of 23393920 in words is "twenty-three million, three hundred ninety-three thousand, nine hundred twenty".