557423628 has 24 divisors (see below), whose sum is σ = 1301323632. Its totient is φ = 185712384.

The previous prime is 557423623. The next prime is 557423641. The reversal of 557423628 is 826324755.

It is a super-2 number, since 2×557423628² = 621442202105364768, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 557423628.

It is not an unprimeable number, because it can be changed into a prime (557423621) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14776 + ... + 36512.

It is an arithmetic number, because the mean of its divisors is an integer number (54221818).

Almost surely, 2^557423628 is an apocalyptic number.

It is an amenable number.

557423628 is an abundant number, since it is smaller than the sum of its proper divisors (743900004).

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

557423628 is a wasteful number, since it uses less digits than its factorization.

557423628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23881 (or 23879 counting only the distinct ones).

The product of its digits is 403200, while the sum is 42.

The square root of 557423628 is about 23609.8205838164. The cubic root of 557423628 is about 822.9910731728.

The spelling of 557423628 in words is "five hundred fifty-seven million, four hundred twenty-three thousand, six hundred twenty-eight".