238413720 has 32 divisors (see below), whose sum is σ = 715241520. Its totient is φ = 63576960.

The previous prime is 238413719. The next prime is 238413737. The reversal of 238413720 is 27314832.

It is a super-2 number, since 2×238413720² = 113682203768476800, which contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 993271 + ... + 993510.

Almost surely, 2^238413720 is an apocalyptic number.

238413720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

238413720 is an abundant number, since it is smaller than the sum of its proper divisors (476827800).

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

238413720 is a wasteful number, since it uses less digits than its factorization.

238413720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1986795 (or 1986791 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 30.

The square root of 238413720 is about 15440.6515406572. The cubic root of 238413720 is about 620.0743233828.

The spelling of 238413720 in words is "two hundred thirty-eight million, four hundred thirteen thousand, seven hundred twenty".