556741920 has 144 divisors (see below), whose sum is σ = 2040147648. Its totient is φ = 127249920.

The previous prime is 556741919. The next prime is 556741921. The reversal of 556741920 is 29147655.

It is an interprime number because it is at equal distance from previous prime (556741919) and next prime (556741921).

It is not an unprimeable number, because it can be changed into a prime (556741921) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11685 + ... + 35355.

It is an arithmetic number, because the mean of its divisors is an integer number (14167692).

Almost surely, 2^556741920 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 556741920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1020073824).

556741920 is an abundant number, since it is smaller than the sum of its proper divisors (1483405728).

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

556741920 is a wasteful number, since it uses less digits than its factorization.

556741920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23703 (or 23688 counting only the distinct ones).

The product of its (nonzero) digits is 75600, while the sum is 39.

The square root of 556741920 is about 23595.3792086502. The cubic root of 556741920 is about 822.6554406689.

The spelling of 556741920 in words is "five hundred fifty-six million, seven hundred forty-one thousand, nine hundred twenty".