290020868 has 12 divisors (see below), whose sum is σ = 510898752. Its totient is φ = 144049800.

The previous prime is 290020849. The next prime is 290020877. The reversal of 290020868 is 868020092.

It is a super-2 number, since 2×290020868² = 168224207750946848, which contains 22 as substring.

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 239480 + ... + 240687.

It is an arithmetic number, because the mean of its divisors is an integer number (42574896).

Almost surely, 2^290020868 is an apocalyptic number.

It is an amenable number.

290020868 is a deficient number, since it is larger than the sum of its proper divisors (220877884).

290020868 is a wasteful number, since it uses less digits than its factorization.

290020868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 480322 (or 480320 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 290020868 is about 17029.9990604815. Note that the first 3 decimals coincide. The cubic root of 290020868 is about 661.9264711463.

The spelling of 290020868 in words is "two hundred ninety million, twenty thousand, eight hundred sixty-eight".