239428416 has 56 divisors (see below), whose sum is σ = 643904224. Its totient is φ = 78497280.

The previous prime is 239428373. The next prime is 239428433. The reversal of 239428416 is 614824932.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1491 + ... + 21933.

Almost surely, 2^239428416 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 239428416, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (321952112).

239428416 is an abundant number, since it is smaller than the sum of its proper divisors (404475808).

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

239428416 is a wasteful number, since it uses less digits than its factorization.

239428416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20519 (or 20509 counting only the distinct ones).

The product of its digits is 82944, while the sum is 39.

The square root of 239428416 is about 15473.4745936393. The cubic root of 239428416 is about 620.9527633587.

The spelling of 239428416 in words is "two hundred thirty-nine million, four hundred twenty-eight thousand, four hundred sixteen".