428179556 has 24 divisors (see below), whose sum is σ = 857559360. Its totient is φ = 183248352.

The previous prime is 428179553. The next prime is 428179559. The reversal of 428179556 is 655971824.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (428179553) and next prime (428179559).

It is a self number, because there is not a number n which added to its sum of digits gives 428179556.

It is not an unprimeable number, because it can be changed into a prime (428179553) 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, 10346 + ... + 31038.

It is an arithmetic number, because the mean of its divisors is an integer number (35731640).

Almost surely, 2^428179556 is an apocalyptic number.

It is a pronic number, being equal to 20692×20693.

It is an amenable number.

428179556 is an abundant number, since it is smaller than the sum of its proper divisors (429379804).

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

428179556 is a wasteful number, since it uses less digits than its factorization.

428179556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21443 (or 21441 counting only the distinct ones).

The product of its digits is 604800, while the sum is 47.

The square root of 428179556 is about 20692.4999939592. The cubic root of 428179556 is about 753.7175755812.

The spelling of 428179556 in words is "four hundred twenty-eight million, one hundred seventy-nine thousand, five hundred fifty-six".