290331392 has 72 divisors (see below), whose sum is σ = 651414624. Its totient is φ = 128139264.

The previous prime is 290331367. The next prime is 290331407. The reversal of 290331392 is 293133092.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74648 + ... + 78440.

Almost surely, 2^290331392 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 290331392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (325707312).

290331392 is an abundant number, since it is smaller than the sum of its proper divisors (361083232).

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

290331392 is a wasteful number, since it uses less digits than its factorization.

290331392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3845 (or 3831 counting only the distinct ones).

The product of its (nonzero) digits is 8748, while the sum is 32.

The square root of 290331392 is about 17039.1135919683. The cubic root of 290331392 is about 662.1626274181.

The spelling of 290331392 in words is "two hundred ninety million, three hundred thirty-one thousand, three hundred ninety-two".