290481896 has 8 divisors (see below), whose sum is σ = 544653570. Its totient is φ = 145240944.

The previous prime is 290481887. The next prime is 290481901. The reversal of 290481896 is 698184092.

It can be written as a sum of positive squares in only one way, i.e., 213568996 + 76912900 = 14614^2 + 8770^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 290481896.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18155111 + ... + 18155126.

Almost surely, 2^290481896 is an apocalyptic number.

It is an amenable number.

290481896 is a deficient number, since it is larger than the sum of its proper divisors (254171674).

290481896 is a wasteful number, since it uses less digits than its factorization.

290481896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36310243 (or 36310239 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 47.

The square root of 290481896 is about 17043.5294466845. The cubic root of 290481896 is about 662.2770264707.

The spelling of 290481896 in words is "two hundred ninety million, four hundred eighty-one thousand, eight hundred ninety-six".