517924990 has 32 divisors (see below), whose sum is σ = 1070547840. Its totient is φ = 178423200.

The previous prime is 517924973. The next prime is 517924993. The reversal of 517924990 is 99429715.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 517924990.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (517924993) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 121816 + ... + 125995.

It is an arithmetic number, because the mean of its divisors is an integer number (33454620).

Almost surely, 2^517924990 is an apocalyptic number.

517924990 is an abundant number, since it is smaller than the sum of its proper divisors (552622850).

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

517924990 is a wasteful number, since it uses less digits than its factorization.

517924990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247848.

The product of its (nonzero) digits is 204120, while the sum is 46.

The square root of 517924990 is about 22757.9654187276. The cubic root of 517924990 is about 803.0741045129.

The spelling of 517924990 in words is "five hundred seventeen million, nine hundred twenty-four thousand, nine hundred ninety".