290138732 has 12 divisors (see below), whose sum is σ = 546800016. Its totient is φ = 133910160.

The previous prime is 290138729. The next prime is 290138749. The reversal of 290138732 is 237831092.

It is a junction number, because it is equal to n+sod(n) for n = 290138692 and 290138701.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2789744 + ... + 2789847.

It is an arithmetic number, because the mean of its divisors is an integer number (45566668).

Almost surely, 2^290138732 is an apocalyptic number.

It is an amenable number.

290138732 is a deficient number, since it is larger than the sum of its proper divisors (256661284).

290138732 is a wasteful number, since it uses less digits than its factorization.

290138732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5579608 (or 5579606 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 290138732 is about 17033.4591906635. The cubic root of 290138732 is about 662.0161276088.

The spelling of 290138732 in words is "two hundred ninety million, one hundred thirty-eight thousand, seven hundred thirty-two".