238435728 has 20 divisors (see below), whose sum is σ = 615959088. Its totient is φ = 79478560.

The previous prime is 238435699. The next prime is 238435777. The reversal of 238435728 is 827534832.

238435728 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 238435728.

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, 2483658 + ... + 2483753.

Almost surely, 2^238435728 is an apocalyptic number.

It is an amenable number.

238435728 is an abundant number, since it is smaller than the sum of its proper divisors (377523360).

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

238435728 is a wasteful number, since it uses less digits than its factorization.

238435728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4967422 (or 4967416 counting only the distinct ones).

The product of its digits is 322560, while the sum is 42.

The square root of 238435728 is about 15441.3641884388. The cubic root of 238435728 is about 620.0934025082.

The spelling of 238435728 in words is "two hundred thirty-eight million, four hundred thirty-five thousand, seven hundred twenty-eight".