23973420 has 24 divisors (see below), whose sum is σ = 67125744. Its totient is φ = 6392896.

The previous prime is 23973413. The next prime is 23973449. The reversal of 23973420 is 2437932.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 199719 + ... + 199838.

It is an arithmetic number, because the mean of its divisors is an integer number (2796906).

Almost surely, 2^23973420 is an apocalyptic number.

23973420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23973420 is an abundant number, since it is smaller than the sum of its proper divisors (43152324).

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

23973420 is a wasteful number, since it uses less digits than its factorization.

23973420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 399569 (or 399567 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 30.

The square root of 23973420 is about 4896.2659241508. The cubic root of 23973420 is about 288.3433886329.

The spelling of 23973420 in words is "twenty-three million, nine hundred seventy-three thousand, four hundred twenty".