428113656 has 24 divisors (see below), whose sum is σ = 1159474680. Its totient is φ = 142704528.

The previous prime is 428113619. The next prime is 428113661. The reversal of 428113656 is 656311824.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 428113656.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2972940 + ... + 2973083.

It is an arithmetic number, because the mean of its divisors is an integer number (48311445).

Almost surely, 2^428113656 is an apocalyptic number.

It is an amenable number.

428113656 is an abundant number, since it is smaller than the sum of its proper divisors (731361024).

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

428113656 is a wasteful number, since it uses less digits than its factorization.

428113656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5946035 (or 5946028 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The square root of 428113656 is about 20690.9075683016. The cubic root of 428113656 is about 753.6789060278.

The spelling of 428113656 in words is "four hundred twenty-eight million, one hundred thirteen thousand, six hundred fifty-six".