238690620 has 72 divisors (see below), whose sum is σ = 827465184. Its totient is φ = 54557568.

The previous prime is 238690609. The next prime is 238690637. The reversal of 238690620 is 26096832.

238690620 is a `hidden beast` number, since 23 + 8 + 6 + 9 + 0 + 620 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 93459 + ... + 95978.

It is an arithmetic number, because the mean of its divisors is an integer number (11492572).

Almost surely, 2^238690620 is an apocalyptic number.

238690620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

238690620 is an abundant number, since it is smaller than the sum of its proper divisors (588774564).

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

238690620 is a wasteful number, since it uses less digits than its factorization.

238690620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189459 (or 189454 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 238690620 is about 15449.6155291968. The cubic root of 238690620 is about 620.3142874129.

The spelling of 238690620 in words is "two hundred thirty-eight million, six hundred ninety thousand, six hundred twenty".