556238420 has 24 divisors (see below), whose sum is σ = 1192955904. Its totient is φ = 217761056.

The previous prime is 556238407. The next prime is 556238483. The reversal of 556238420 is 24832655.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 294932 + ... + 296811.

It is an arithmetic number, because the mean of its divisors is an integer number (49706496).

Almost surely, 2^556238420 is an apocalyptic number.

It is an amenable number.

556238420 is an abundant number, since it is smaller than the sum of its proper divisors (636717484).

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

556238420 is a wasteful number, since it uses less digits than its factorization.

556238420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 591799 (or 591797 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 35.

The square root of 556238420 is about 23584.7073333548. The cubic root of 556238420 is about 822.4073712448.

The spelling of 556238420 in words is "five hundred fifty-six million, two hundred thirty-eight thousand, four hundred twenty".