290402680 has 16 divisors (see below), whose sum is σ = 653406120. Its totient is φ = 116161056.

The previous prime is 290402663. The next prime is 290402701. The reversal of 290402680 is 86204092.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3629994 + ... + 3630073.

Almost surely, 2^290402680 is an apocalyptic number.

290402680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

290402680 is an abundant number, since it is smaller than the sum of its proper divisors (363003440).

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

290402680 is a wasteful number, since it uses less digits than its factorization.

290402680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7260078 (or 7260074 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 290402680 is about 17041.2053564295. The cubic root of 290402680 is about 662.2168188096.

The spelling of 290402680 in words is "two hundred ninety million, four hundred two thousand, six hundred eighty".