290138692 has 12 divisors (see below), whose sum is σ = 516066796. Its totient is φ = 142691040.

The previous prime is 290138671. The next prime is 290138729. The reversal of 290138692 is 296831092.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 12716356 + 277422336 = 3566^2 + 16656^2 .

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

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, 594303 + ... + 594790.

Almost surely, 2^290138692 is an apocalyptic number.

It is an amenable number.

290138692 is a deficient number, since it is larger than the sum of its proper divisors (225928104).

290138692 is a wasteful number, since it uses less digits than its factorization.

290138692 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1189158 (or 1189156 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 40.

The square root of 290138692 is about 17033.4580165039. The cubic root of 290138692 is about 662.0160971859.

The spelling of 290138692 in words is "two hundred ninety million, one hundred thirty-eight thousand, six hundred ninety-two".