290916081 has 24 divisors (see below), whose sum is σ = 435864000. Its totient is φ = 186756192.

The previous prime is 290916047. The next prime is 290916083. The reversal of 290916081 is 180619092.

It is not a de Polignac number, because 290916081 - 2⁷ = 290915953 is a prime.

It is a super-2 number, since 2×290916081² = 169264332368797122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (290916083) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 113310 + ... + 115848.

It is an arithmetic number, because the mean of its divisors is an integer number (18161000).

Almost surely, 2^290916081 is an apocalyptic number.

It is an amenable number.

290916081 is a deficient number, since it is larger than the sum of its proper divisors (144947919).

290916081 is a wasteful number, since it uses less digits than its factorization.

290916081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3013 (or 3010 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 36.

The square root of 290916081 is about 17056.2622224214. The cubic root of 290916081 is about 662.6068319945.

The spelling of 290916081 in words is "two hundred ninety million, nine hundred sixteen thousand, eighty-one".