428745064 has 16 divisors (see below), whose sum is σ = 876978720. Its totient is φ = 194884080.

The previous prime is 428744989. The next prime is 428745067. The reversal of 428745064 is 460547824.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (428745067) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2435964 + ... + 2436139.

It is an arithmetic number, because the mean of its divisors is an integer number (54811170).

Almost surely, 2^428745064 is an apocalyptic number.

428745064 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

428745064 is an abundant number, since it is smaller than the sum of its proper divisors (448233656).

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

428745064 is a wasteful number, since it uses less digits than its factorization.

428745064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4872120 (or 4872116 counting only the distinct ones).

The product of its (nonzero) digits is 215040, while the sum is 40.

The square root of 428745064 is about 20706.1600496084. The cubic root of 428745064 is about 754.0492478158.

The spelling of 428745064 in words is "four hundred twenty-eight million, seven hundred forty-five thousand, sixty-four".