290492540 has 24 divisors (see below), whose sum is σ = 656960640. Its totient is φ = 107258688.

The previous prime is 290492519. The next prime is 290492567. The reversal of 290492540 is 45294092.

It is a self number, because there is not a number n which added to its sum of digits gives 290492540.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 558380 + ... + 558899.

It is an arithmetic number, because the mean of its divisors is an integer number (27373360).

Almost surely, 2^290492540 is an apocalyptic number.

290492540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

290492540 is an abundant number, since it is smaller than the sum of its proper divisors (366468100).

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

290492540 is a wasteful number, since it uses less digits than its factorization.

290492540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1117301 (or 1117299 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 290492540 is about 17043.8417030903. The cubic root of 290492540 is about 662.2851155469.

The spelling of 290492540 in words is "two hundred ninety million, four hundred ninety-two thousand, five hundred forty".