238764390 has 32 divisors (see below), whose sum is σ = 573492960. Its totient is φ = 63619584.

The previous prime is 238764389. The next prime is 238764397. The reversal of 238764390 is 93467832.

238764390 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (238764397) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48942 + ... + 53598.

It is an arithmetic number, because the mean of its divisors is an integer number (17921655).

Almost surely, 2^238764390 is an apocalyptic number.

238764390 is an abundant number, since it is smaller than the sum of its proper divisors (334728570).

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

238764390 is a wasteful number, since it uses less digits than its factorization.

238764390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6376.

The product of its (nonzero) digits is 217728, while the sum is 42.

The square root of 238764390 is about 15452.0027828110. The cubic root of 238764390 is about 620.3781858483.

The spelling of 238764390 in words is "two hundred thirty-eight million, seven hundred sixty-four thousand, three hundred ninety".