236890020 has 48 divisors (see below), whose sum is σ = 664449408. Its totient is φ = 63060480.

The previous prime is 236890013. The next prime is 236890033. The reversal of 236890020 is 20098632.

It is a super-2 number, since 2×236890020² = 112233763151200800, which contains 22 as substring.

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

It is a self number, because there is not a number n which added to its sum of digits gives 236890020.

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, 34732 + ... + 40988.

It is an arithmetic number, because the mean of its divisors is an integer number (13842696).

Almost surely, 2^236890020 is an apocalyptic number.

236890020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

236890020 is an abundant number, since it is smaller than the sum of its proper divisors (427559388).

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

236890020 is a wasteful number, since it uses less digits than its factorization.

236890020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6900 (or 6898 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 236890020 is about 15391.2319195053. The cubic root of 236890020 is about 618.7505360673.

The spelling of 236890020 in words is "two hundred thirty-six million, eight hundred ninety thousand, twenty".