238316840 has 32 divisors (see below), whose sum is σ = 553512960. Its totient is φ = 92251200.

The previous prime is 238316833. The next prime is 238316861. The reversal of 238316840 is 48613832.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 238316840.

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 7 ways as a sum of consecutive naturals, for example, 94856 + ... + 97335.

It is an arithmetic number, because the mean of its divisors is an integer number (17297280).

Almost surely, 2^238316840 is an apocalyptic number.

238316840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

238316840 is an abundant number, since it is smaller than the sum of its proper divisors (315196120).

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

238316840 is a wasteful number, since it uses less digits than its factorization.

238316840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192233 (or 192229 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 35.

The square root of 238316840 is about 15437.5140485766. The cubic root of 238316840 is about 619.9903224296.

The spelling of 238316840 in words is "two hundred thirty-eight million, three hundred sixteen thousand, eight hundred forty".