290285636 has 12 divisors (see below), whose sum is σ = 509457900. Its totient is φ = 144726240.

The previous prime is 290285627. The next prime is 290285711. The reversal of 290285636 is 636582092.

It can be written as a sum of positive squares in 2 ways, for example, as 228191236 + 62094400 = 15106^2 + 7880^2 .

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 290285593 and 290285602.

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, 102575 + ... + 105366.

It is an arithmetic number, because the mean of its divisors is an integer number (42454825).

Almost surely, 2^290285636 is an apocalyptic number.

It is an amenable number.

290285636 is a deficient number, since it is larger than the sum of its proper divisors (219172264).

290285636 is a wasteful number, since it uses less digits than its factorization.

290285636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208294 (or 208292 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 41.

The square root of 290285636 is about 17037.7708635842. The cubic root of 290285636 is about 662.1278401534.

The spelling of 290285636 in words is "two hundred ninety million, two hundred eighty-five thousand, six hundred thirty-six".