290400164 has 12 divisors (see below), whose sum is σ = 508368000. Its totient is φ = 145152168.

The previous prime is 290400163. The next prime is 290400181. The reversal of 290400164 is 461004092.

It is not an unprimeable number, because it can be changed into a prime (290400163) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4037 + ... + 24435.

It is an arithmetic number, because the mean of its divisors is an integer number (42364000).

Almost surely, 2^290400164 is an apocalyptic number.

It is an amenable number.

290400164 is a deficient number, since it is larger than the sum of its proper divisors (217967836).

290400164 is a wasteful number, since it uses less digits than its factorization.

290400164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23962 (or 23960 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 290400164 is about 17041.1315352004. The cubic root of 290400164 is about 662.2149063590.

The spelling of 290400164 in words is "two hundred ninety million, four hundred thousand, one hundred sixty-four".