290320464 has 40 divisors (see below), whose sum is σ = 857137600. Its totient is φ = 82948608.

The previous prime is 290320453. The next prime is 290320501. The reversal of 290320464 is 464023092.

It is a congruent number.

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, 431689 + ... + 432360.

It is an arithmetic number, because the mean of its divisors is an integer number (21428440).

Almost surely, 2^290320464 is an apocalyptic number.

290320464 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

290320464 is an abundant number, since it is smaller than the sum of its proper divisors (566817136).

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

290320464 is a wasteful number, since it uses less digits than its factorization.

290320464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 864067 (or 864061 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 30.

The square root of 290320464 is about 17038.7929149925. The cubic root of 290320464 is about 662.1543194360.

The spelling of 290320464 in words is "two hundred ninety million, three hundred twenty thousand, four hundred sixty-four".