236870238420 has 36 divisors (see below), whose sum is σ = 718506390420. Its totient is φ = 63165396864.

The previous prime is 236870238419. The next prime is 236870238433. The reversal of 236870238420 is 24832078632.

236870238420 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 164832752016 + 72037486404 = 405996^2 + 268398^2 .

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

It is a super-2 number, since 2×236870238420² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 657972705 + ... + 657973064.

It is an arithmetic number, because the mean of its divisors is an integer number (19958510845).

Almost surely, 2^236870238420 is an apocalyptic number.

236870238420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

236870238420 is an abundant number, since it is smaller than the sum of its proper divisors (481636152000).

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

236870238420 is a wasteful number, since it uses less digits than its factorization.

236870238420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1315945784 (or 1315945779 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 45.

The spelling of 236870238420 in words is "two hundred thirty-six billion, eight hundred seventy million, two hundred thirty-eight thousand, four hundred twenty".