238851840 has 72 divisors (see below), whose sum is σ = 762845328. Its totient is φ = 63692800.

The previous prime is 238851797. The next prime is 238851857. The reversal of 238851840 is 48158832.

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, 27261 + ... + 34940.

It is an arithmetic number, because the mean of its divisors is an integer number (10595074).

Almost surely, 2^238851840 is an apocalyptic number.

238851840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

238851840 is an abundant number, since it is smaller than the sum of its proper divisors (523993488).

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

238851840 is an equidigital number, since it uses as much as digits as its factorization.

238851840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62225 (or 62211 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 39.

The square root of 238851840 is about 15454.8322540233. The cubic root of 238851840 is about 620.4539166419.

The spelling of 238851840 in words is "two hundred thirty-eight million, eight hundred fifty-one thousand, eight hundred forty".