290485888 has 64 divisors (see below), whose sum is σ = 721523520. Its totient is φ = 113172480.

The previous prime is 290485879. The next prime is 290485891. The reversal of 290485888 is 888584092.

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-2 number, since 2×290485888² = 168764102254297088, which contains 22 as substring.

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, 4881 + ... + 24592.

It is an arithmetic number, because the mean of its divisors is an integer number (11273805).

Almost surely, 2^290485888 is an apocalyptic number.

290485888 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

290485888 is an abundant number, since it is smaller than the sum of its proper divisors (431037632).

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

290485888 is a wasteful number, since it uses less digits than its factorization.

290485888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29505 (or 29493 counting only the distinct ones).

The product of its (nonzero) digits is 1474560, while the sum is 52.

The square root of 290485888 is about 17043.6465581753. The cubic root of 290485888 is about 662.2800602774.

The spelling of 290485888 in words is "two hundred ninety million, four hundred eighty-five thousand, eight hundred eighty-eight".