428078056 has 32 divisors (see below), whose sum is σ = 965592000. Its totient is φ = 173805696.

The previous prime is 428078051. The next prime is 428078081. The reversal of 428078056 is 650870824.

It is not an unprimeable number, because it can be changed into a prime (428078051) 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, 200101 + ... + 202228.

It is an arithmetic number, because the mean of its divisors is an integer number (30174750).

Almost surely, 2^428078056 is an apocalyptic number.

It is an amenable number.

428078056 is an abundant number, since it is smaller than the sum of its proper divisors (537513944).

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

428078056 is a wasteful number, since it uses less digits than its factorization.

428078056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 402361 (or 402357 counting only the distinct ones).

The product of its (nonzero) digits is 107520, while the sum is 40.

The square root of 428078056 is about 20690.0472691582. The cubic root of 428078056 is about 753.6580146029.

The spelling of 428078056 in words is "four hundred twenty-eight million, seventy-eight thousand, fifty-six".