290561672 has 16 divisors (see below), whose sum is σ = 563589900. Its totient is φ = 140271040.

The previous prime is 290561659. The next prime is 290561717. The reversal of 290561672 is 276165092.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 277355716 + 13205956 = 16654^2 + 3634^2 .

It is an alternating number because its digits alternate between even and odd.

It is a pancake number, because a pancake can be divided into 290561672 parts by 24106 straight cuts.

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, 625979 + ... + 626442.

Almost surely, 2^290561672 is an apocalyptic number.

It is an amenable number.

290561672 is a deficient number, since it is larger than the sum of its proper divisors (273028228).

290561672 is a wasteful number, since it uses less digits than its factorization.

290561672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1252456 (or 1252452 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 38.

The square root of 290561672 is about 17045.8696463395. The cubic root of 290561672 is about 662.3376486952.

The spelling of 290561672 in words is "two hundred ninety million, five hundred sixty-one thousand, six hundred seventy-two".