428039692 has 12 divisors (see below), whose sum is σ = 773233216. Its totient is φ = 207115920.

The previous prime is 428039687. The next prime is 428039693. The reversal of 428039692 is 296930824.

It is not an unprimeable number, because it can be changed into a prime (428039693) 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 3 ways as a sum of consecutive naturals, for example, 1725843 + ... + 1726090.

Almost surely, 2^428039692 is an apocalyptic number.

It is an amenable number.

428039692 is a deficient number, since it is larger than the sum of its proper divisors (345193524).

428039692 is a wasteful number, since it uses less digits than its factorization.

428039692 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3451968 (or 3451966 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 43.

The square root of 428039692 is about 20689.1201359555. The cubic root of 428039692 is about 753.6354998618.

The spelling of 428039692 in words is "four hundred twenty-eight million, thirty-nine thousand, six hundred ninety-two".