478291392 has 140 divisors (see below), whose sum is σ = 1427286960. Its totient is φ = 158367744.

The previous prime is 478291339. The next prime is 478291409. The reversal of 478291392 is 293192874.

478291392 is a `hidden beast` number, since 478 + 2 + 91 + 3 + 92 = 666.

It is a super-2 number, since 2×478291392² = 457525311322595328, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1332109 + ... + 1332467.

Almost surely, 2^478291392 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 478291392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (713643480).

478291392 is an abundant number, since it is smaller than the sum of its proper divisors (948995568).

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

478291392 is a wasteful number, since it uses less digits than its factorization.

478291392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 640 (or 621 counting only the distinct ones).

The product of its digits is 217728, while the sum is 45.

The square root of 478291392 is about 21869.8740737115. The cubic root of 478291392 is about 782.0433995402.

The spelling of 478291392 in words is "four hundred seventy-eight million, two hundred ninety-one thousand, three hundred ninety-two".