290684136728 has 16 divisors (see below), whose sum is σ = 545173250760. Its totient is φ = 145304603200.

The previous prime is 290684136661. The next prime is 290684136733. The reversal of 290684136728 is 827631486092.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4650158 + ... + 4712253.

Almost surely, 2^290684136728 is an apocalyptic number.

It is an amenable number.

290684136728 is a deficient number, since it is larger than the sum of its proper divisors (254489114032).

290684136728 is a wasteful number, since it uses less digits than its factorization.

290684136728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9366298 (or 9366294 counting only the distinct ones).

The product of its (nonzero) digits is 6967296, while the sum is 56.

The spelling of 290684136728 in words is "two hundred ninety billion, six hundred eighty-four million, one hundred thirty-six thousand, seven hundred twenty-eight".