556003920 has 80 divisors (see below), whose sum is σ = 1756173312. Its totient is φ = 145466880.

The previous prime is 556003891. The next prime is 556003933. The reversal of 556003920 is 29300655.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9136 + ... + 34575.

Almost surely, 2^556003920 is an apocalyptic number.

It is an amenable number.

556003920 is an abundant number, since it is smaller than the sum of its proper divisors (1200169392).

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

556003920 is a wasteful number, since it uses less digits than its factorization.

556003920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43780 (or 43774 counting only the distinct ones).

The product of its (nonzero) digits is 8100, while the sum is 30.

The square root of 556003920 is about 23579.7353674718. The cubic root of 556003920 is about 822.2917843374.

The spelling of 556003920 in words is "five hundred fifty-six million, three thousand, nine hundred twenty".