23419920 has 40 divisors (see below), whose sum is σ = 72602496. Its totient is φ = 6245248.

The previous prime is 23419919. The next prime is 23419939. The reversal of 23419920 is 2991432.

It is a tau number, because it is divible by the number of its divisors (40).

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, 48552 + ... + 49031.

Almost surely, 2^23419920 is an apocalyptic number.

23419920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23419920 is an abundant number, since it is smaller than the sum of its proper divisors (49182576).

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

23419920 is a wasteful number, since it uses less digits than its factorization.

23419920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97599 (or 97593 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 23419920 is about 4839.4131875673. The cubic root of 23419920 is about 286.1069904693.

The spelling of 23419920 in words is "twenty-three million, four hundred nineteen thousand, nine hundred twenty".