239423728 has 10 divisors (see below), whose sum is σ = 463883504. Its totient is φ = 119711856.

The previous prime is 239423713. The next prime is 239423729. The reversal of 239423728 is 827324932.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (239423729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7481976 + ... + 7482007.

Almost surely, 2^239423728 is an apocalyptic number.

It is an amenable number.

239423728 is a deficient number, since it is larger than the sum of its proper divisors (224459776).

239423728 is a wasteful number, since it uses less digits than its factorization.

239423728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14963991 (or 14963985 counting only the distinct ones).

The product of its digits is 145152, while the sum is 40.

The square root of 239423728 is about 15473.3231078524. The cubic root of 239423728 is about 620.9487105878.

The spelling of 239423728 in words is "two hundred thirty-nine million, four hundred twenty-three thousand, seven hundred twenty-eight".