23428500 has 48 divisors (see below), whose sum is σ = 68228160. Its totient is φ = 6247200.

The previous prime is 23428439. The next prime is 23428523. The reversal of 23428500 is 582432.

It is a super-2 number, since 2×23428500² = 1097789224500000, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6310 + ... + 9309.

It is an arithmetic number, because the mean of its divisors is an integer number (1421420).

Almost surely, 2^23428500 is an apocalyptic number.

23428500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23428500 is an abundant number, since it is smaller than the sum of its proper divisors (44799660).

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

23428500 is a wasteful number, since it uses less digits than its factorization.

23428500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15641 (or 15629 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 23428500 is about 4840.2995775055. The cubic root of 23428500 is about 286.1419250928.

The spelling of 23428500 in words is "twenty-three million, four hundred twenty-eight thousand, five hundred".