550590728 has 16 divisors (see below), whose sum is σ = 1033357500. Its totient is φ = 275028736.

The previous prime is 550590707. The next prime is 550590731. The reversal of 550590728 is 827095055.

It can be written as a sum of positive squares in 2 ways, for example, as 436057924 + 114532804 = 20882^2 + 10702^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24413 + ... + 41196.

Almost surely, 2^550590728 is an apocalyptic number.

It is an amenable number.

550590728 is a deficient number, since it is larger than the sum of its proper divisors (482766772).

550590728 is a wasteful number, since it uses less digits than its factorization.

550590728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66664 (or 66660 counting only the distinct ones).

The product of its (nonzero) digits is 126000, while the sum is 41.

The square root of 550590728 is about 23464.6697824623. The cubic root of 550590728 is about 819.6144965643.

The spelling of 550590728 in words is "five hundred fifty million, five hundred ninety thousand, seven hundred twenty-eight".