238578916 has 9 divisors (see below), whose sum is σ = 417567171. Its totient is φ = 119274012.

The previous prime is 238578889. The next prime is 238578961. The reversal of 238578916 is 619875832.

The square root of 238578916 is 15446.

It is a perfect power (a square), and thus also a powerful number.

238578916 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 238578916.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 27031 + ... + 34753.

Almost surely, 2^238578916 is an apocalyptic number.

238578916 is the 15446-th square number.

It is an amenable number.

238578916 is a deficient number, since it is larger than the sum of its proper divisors (178988255).

238578916 is an frugal number, since it uses more digits than its factorization.

238578916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15450 (or 7725 counting only the distinct ones).

The product of its digits is 725760, while the sum is 49.

The cubic root of 238578916 is about 620.2175060659.

Multiplying 238578916 by its sum of digits (49), we get a square (11690366884 = 108122²).

The spelling of 238578916 in words is "two hundred thirty-eight million, five hundred seventy-eight thousand, nine hundred sixteen".