501078990 has 32 divisors (see below), whose sum is σ = 1205360640. Its totient is φ = 133313184.

The previous prime is 501078979. The next prime is 501079003. The reversal of 501078990 is 99870105.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5854 + ... + 32193.

It is an arithmetic number, because the mean of its divisors is an integer number (37667520).

Almost surely, 2^501078990 is an apocalyptic number.

501078990 is an abundant number, since it is smaller than the sum of its proper divisors (704281650).

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

501078990 is a wasteful number, since it uses less digits than its factorization.

501078990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38496.

The product of its (nonzero) digits is 22680, while the sum is 39.

The square root of 501078990 is about 22384.7937225251. The cubic root of 501078990 is about 794.2710457443.

The spelling of 501078990 in words is "five hundred one million, seventy-eight thousand, nine hundred ninety".