428764812 has 24 divisors (see below), whose sum is σ = 1143373056. Its totient is φ = 122504208.

The previous prime is 428764807. The next prime is 428764823. The reversal of 428764812 is 218467824.

It is a Harshad number since it is a multiple of its sum of digits (42).

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, 2552088 + ... + 2552255.

It is an arithmetic number, because the mean of its divisors is an integer number (47640544).

Almost surely, 2^428764812 is an apocalyptic number.

428764812 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is an amenable number.

428764812 is an abundant number, since it is smaller than the sum of its proper divisors (714608244).

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

428764812 is a wasteful number, since it uses less digits than its factorization.

428764812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5104357 (or 5104355 counting only the distinct ones).

The product of its digits is 172032, while the sum is 42.

The square root of 428764812 is about 20706.6369070402. The cubic root of 428764812 is about 754.0608248089.

The spelling of 428764812 in words is "four hundred twenty-eight million, seven hundred sixty-four thousand, eight hundred twelve".