290864020 has 12 divisors (see below), whose sum is σ = 610814484. Its totient is φ = 116345600.

The previous prime is 290864011. The next prime is 290864039. The reversal of 290864020 is 20468092.

It can be written as a sum of positive squares in 2 ways, for example, as 160630276 + 130233744 = 12674^2 + 11412^2 .

It is a congruent number.

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, 7271581 + ... + 7271620.

It is an arithmetic number, because the mean of its divisors is an integer number (50901207).

Almost surely, 2^290864020 is an apocalyptic number.

290864020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

290864020 is an abundant number, since it is smaller than the sum of its proper divisors (319950464).

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

290864020 is a wasteful number, since it uses less digits than its factorization.

290864020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14543210 (or 14543208 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 290864020 is about 17054.7359991294. The cubic root of 290864020 is about 662.5673039491.

The spelling of 290864020 in words is "two hundred ninety million, eight hundred sixty-four thousand, twenty".