290879172 has 18 divisors (see below), whose sum is σ = 735277998. Its totient is φ = 96959712.

The previous prime is 290879161. The next prime is 290879203. The reversal of 290879172 is 271978092.

It can be written as a sum of positive squares in only one way, i.e., 226622916 + 64256256 = 15054^2 + 8016^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×290879172² = 169221385406811168, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4039953 + ... + 4040024.

Almost surely, 2^290879172 is an apocalyptic number.

It is an amenable number.

290879172 is an abundant number, since it is smaller than the sum of its proper divisors (444398826).

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

290879172 is a wasteful number, since it uses less digits than its factorization.

290879172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8079987 (or 8079982 counting only the distinct ones).

The product of its (nonzero) digits is 127008, while the sum is 45.

The square root of 290879172 is about 17055.1802101297. The cubic root of 290879172 is about 662.5788088045.

The spelling of 290879172 in words is "two hundred ninety million, eight hundred seventy-nine thousand, one hundred seventy-two".