250649490 has 64 divisors (see below), whose sum is σ = 740388096. Its totient is φ = 52883712.

The previous prime is 250649489. The next prime is 250649519. The reversal of 250649490 is 94946052.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 43177 + ... + 48636.

It is an arithmetic number, because the mean of its divisors is an integer number (11568564).

Almost surely, 2^250649490 is an apocalyptic number.

250649490 is an abundant number, since it is smaller than the sum of its proper divisors (489738606).

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

250649490 is a wasteful number, since it uses less digits than its factorization.

250649490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91843.

The product of its (nonzero) digits is 77760, while the sum is 39.

The square root of 250649490 is about 15831.9136556514. The cubic root of 250649490 is about 630.5055906151.

The spelling of 250649490 in words is "two hundred fifty million, six hundred forty-nine thousand, four hundred ninety".