238665760 has 24 divisors (see below), whose sum is σ = 563848236. Its totient is φ = 95466240.

The previous prime is 238665743. The next prime is 238665761. The reversal of 238665760 is 67566832.

It can be written as a sum of positive squares in 2 ways, for example, as 220106896 + 18558864 = 14836^2 + 4308^2 .

It is a super-2 number, since 2×238665760² = 113922689992755200, which contains 22 as substring.

It is a Smith number, since the sum of its digits (43) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (238665761) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 745671 + ... + 745990.

Almost surely, 2^238665760 is an apocalyptic number.

238665760 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

238665760 is an abundant number, since it is smaller than the sum of its proper divisors (325182476).

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

238665760 is a wasteful number, since it uses less digits than its factorization.

238665760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1491676 (or 1491668 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 43.

The square root of 238665760 is about 15448.8109574815. The cubic root of 238665760 is about 620.2927510986.

The spelling of 238665760 in words is "two hundred thirty-eight million, six hundred sixty-five thousand, seven hundred sixty".