23790420 has 36 divisors (see below), whose sum is σ = 72164820. Its totient is φ = 6344064.

The previous prime is 23790419. The next prime is 23790421. The reversal of 23790420 is 2409732.

23790420 is a `hidden beast` number, since 237 + 9 + 0 + 420 = 666.

It is an interprime number because it is at equal distance from previous prime (23790419) and next prime (23790421).

It can be written as a sum of positive squares in 2 ways, for example, as 17943696 + 5846724 = 4236^2 + 2418^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23790421) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 65905 + ... + 66264.

Almost surely, 2^23790420 is an apocalyptic number.

23790420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23790420 is an abundant number, since it is smaller than the sum of its proper divisors (48374400).

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

23790420 is a wasteful number, since it uses less digits than its factorization.

23790420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132184 (or 132179 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 23790420 is about 4877.5424139622. The cubic root of 23790420 is about 287.6078284884.

The spelling of 23790420 in words is "twenty-three million, seven hundred ninety thousand, four hundred twenty".