23870028 has 48 divisors (see below), whose sum is σ = 68552960. Its totient is φ = 6295104.

The previous prime is 23870017. The next prime is 23870039. The reversal of 23870028 is 82007832.

It is an interprime number because it is at equal distance from previous prime (23870017) and next prime (23870039).

It is a junction number, because it is equal to n+sod(n) for n = 23869977 and 23870004.

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, 9838 + ... + 12021.

Almost surely, 2^23870028 is an apocalyptic number.

23870028 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

23870028 is an abundant number, since it is smaller than the sum of its proper divisors (44682932).

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

23870028 is a wasteful number, since it uses less digits than its factorization.

23870028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21886 (or 21884 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 23870028 is about 4885.6962656309. The cubic root of 23870028 is about 287.9282711028.

The spelling of 23870028 in words is "twenty-three million, eight hundred seventy thousand, twenty-eight".