428817764 has 24 divisors (see below), whose sum is σ = 790742400. Its totient is φ = 202914720.

The previous prime is 428817749. The next prime is 428817769. The reversal of 428817764 is 467718824.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (428817769) 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, 91109 + ... + 95699.

It is an arithmetic number, because the mean of its divisors is an integer number (32947600).

Almost surely, 2^428817764 is an apocalyptic number.

It is an amenable number.

428817764 is a deficient number, since it is larger than the sum of its proper divisors (361924636).

428817764 is a wasteful number, since it uses less digits than its factorization.

428817764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5843 (or 5841 counting only the distinct ones).

The product of its digits is 602112, while the sum is 47.

The square root of 428817764 is about 20707.9154914250. The cubic root of 428817764 is about 754.0918654354.

The spelling of 428817764 in words is "four hundred twenty-eight million, eight hundred seventeen thousand, seven hundred sixty-four".