550945728 has 42 divisors (see below), whose sum is σ = 1579188104. Its totient is φ = 183648384.

The previous prime is 550945723. The next prime is 550945739. The reversal of 550945728 is 827549055.

550945728 is a `hidden beast` number, since 550 + 94 + 5 + 7 + 2 + 8 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (550945721) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 477676 + ... + 478827.

Almost surely, 2^550945728 is an apocalyptic number.

It is an amenable number.

550945728 is an abundant number, since it is smaller than the sum of its proper divisors (1028242376).

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

550945728 is a wasteful number, since it uses less digits than its factorization.

550945728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 956521 (or 956508 counting only the distinct ones).

The product of its (nonzero) digits is 504000, while the sum is 45.

The square root of 550945728 is about 23472.2331276766. The cubic root of 550945728 is about 819.7906108236.

The spelling of 550945728 in words is "five hundred fifty million, nine hundred forty-five thousand, seven hundred twenty-eight".