428994756 has 36 divisors (see below), whose sum is σ = 1107480192. Its totient is φ = 139955184.

The previous prime is 428994737. The next prime is 428994757. The reversal of 428994756 is 657499824.

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (428994757) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 125080 + ... + 128463.

Almost surely, 2^428994756 is an apocalyptic number.

It is an amenable number.

428994756 is an abundant number, since it is smaller than the sum of its proper divisors (678485436).

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

428994756 is a wasteful number, since it uses less digits than its factorization.

428994756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253600 (or 253595 counting only the distinct ones).

The product of its digits is 4354560, while the sum is 54.

The square root of 428994756 is about 20712.1885854682. The cubic root of 428994756 is about 754.1956001530.

The spelling of 428994756 in words is "four hundred twenty-eight million, nine hundred ninety-four thousand, seven hundred fifty-six".