290260971 has 144 divisors (see below), whose sum is σ = 592562880. Its totient is φ = 133056000.

The previous prime is 290260961. The next prime is 290260979. The reversal of 290260971 is 179062092.

It is not a de Polignac number, because 290260971 - 2⁵ = 290260939 is a prime.

It is not an unprimeable number, because it can be changed into a prime (290260979) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 2873821 + ... + 2873921.

It is an arithmetic number, because the mean of its divisors is an integer number (4115020).

Almost surely, 2^290260971 is an apocalyptic number.

290260971 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

290260971 is an abundant number, since it is smaller than the sum of its proper divisors (302301909).

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

290260971 is a wasteful number, since it uses less digits than its factorization.

290260971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178 (or 164 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 36.

The square root of 290260971 is about 17037.0470152547. The cubic root of 290260971 is about 662.1090863884.

The spelling of 290260971 in words is "two hundred ninety million, two hundred sixty thousand, nine hundred seventy-one".