290090520 has 48 divisors (see below), whose sum is σ = 942795360. Its totient is φ = 77357376.

The previous prime is 290090519. The next prime is 290090573. The reversal of 290090520 is 25090092.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 402544 + ... + 403263.

It is an arithmetic number, because the mean of its divisors is an integer number (19641570).

Almost surely, 2^290090520 is an apocalyptic number.

290090520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

290090520 is an abundant number, since it is smaller than the sum of its proper divisors (652704840).

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

290090520 is a wasteful number, since it uses less digits than its factorization.

290090520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 805824 (or 805817 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 27.

The square root of 290090520 is about 17032.0439172755. The cubic root of 290090520 is about 661.9794567728.

The spelling of 290090520 in words is "two hundred ninety million, ninety thousand, five hundred twenty".