557803428 has 72 divisors (see below), whose sum is σ = 1610739648. Its totient is φ = 147109248.

The previous prime is 557803399. The next prime is 557803451. The reversal of 557803428 is 824308755.

It is a super-2 number, since 2×557803428² = 622289328577102368, which contains 22 as substring.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 557803428.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5451 + ... + 33842.

It is an arithmetic number, because the mean of its divisors is an integer number (22371384).

Almost surely, 2^557803428 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 557803428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (805369824).

557803428 is an abundant number, since it is smaller than the sum of its proper divisors (1052936220).

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

557803428 is a wasteful number, since it uses less digits than its factorization.

557803428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39333 (or 39318 counting only the distinct ones).

The product of its (nonzero) digits is 268800, while the sum is 42.

The square root of 557803428 is about 23617.8624773708. The cubic root of 557803428 is about 823.1779454369.

The spelling of 557803428 in words is "five hundred fifty-seven million, eight hundred three thousand, four hundred twenty-eight".