428828736 has 56 divisors (see below), whose sum is σ = 1296700480. Its totient is φ = 122522112.

The previous prime is 428828683. The next prime is 428828747. The reversal of 428828736 is 637828824.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (56).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a nude number because it is divisible by every one of its digits.

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, 158191 + ... + 160878.

Almost surely, 2^428828736 is an apocalyptic number.

It is an amenable number.

428828736 is an abundant number, since it is smaller than the sum of its proper divisors (867871744).

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

428828736 is a wasteful number, since it uses less digits than its factorization.

428828736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 319091 (or 319081 counting only the distinct ones).

The product of its digits is 1032192, while the sum is 48.

The square root of 428828736 is about 20708.1804125809. The cubic root of 428828736 is about 754.0982969362.

The spelling of 428828736 in words is "four hundred twenty-eight million, eight hundred twenty-eight thousand, seven hundred thirty-six".