238243728 has 20 divisors (see below), whose sum is σ = 615463088. Its totient is φ = 79414560.

The previous prime is 238243673. The next prime is 238243751. The reversal of 238243728 is 827342832.

238243728 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2481658 + ... + 2481753.

Almost surely, 2^238243728 is an apocalyptic number.

It is an amenable number.

238243728 is an abundant number, since it is smaller than the sum of its proper divisors (377219360).

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

238243728 is a wasteful number, since it uses less digits than its factorization.

238243728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4963422 (or 4963416 counting only the distinct ones).

The product of its digits is 129024, while the sum is 39.

The square root of 238243728 is about 15435.1458690872. The cubic root of 238243728 is about 619.9269147288.

The spelling of 238243728 in words is "two hundred thirty-eight million, two hundred forty-three thousand, seven hundred twenty-eight".