549318628 has 12 divisors (see below), whose sum is σ = 962055612. Its totient is φ = 274445600.

The previous prime is 549318617. The next prime is 549318631. The reversal of 549318628 is 826813945.

It can be written as a sum of positive squares in 2 ways, for example, as 131606784 + 417711844 = 11472^2 + 20438^2 .

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, 47575 + ... + 57982.

It is an arithmetic number, because the mean of its divisors is an integer number (80171301).

Almost surely, 2^549318628 is an apocalyptic number.

It is an amenable number.

549318628 is a deficient number, since it is larger than the sum of its proper divisors (412736984).

549318628 is a wasteful number, since it uses less digits than its factorization.

549318628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106862 (or 106860 counting only the distinct ones).

The product of its digits is 414720, while the sum is 46.

The square root of 549318628 is about 23437.5473972854. The cubic root of 549318628 is about 818.9827898324.

The spelling of 549318628 in words is "five hundred forty-nine million, three hundred eighteen thousand, six hundred twenty-eight".