428634692 has 12 divisors (see below), whose sum is σ = 750968316. Its totient is φ = 214072320.

The previous prime is 428634683. The next prime is 428634709. The reversal of 428634692 is 296436824.

It can be written as a sum of positive squares in 2 ways, for example, as 277688896 + 150945796 = 16664^2 + 12286^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57293 + ... + 64340.

It is an arithmetic number, because the mean of its divisors is an integer number (62580693).

Almost surely, 2^428634692 is an apocalyptic number.

It is an amenable number.

428634692 is a deficient number, since it is larger than the sum of its proper divisors (322333624).

428634692 is a wasteful number, since it uses less digits than its factorization.

428634692 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122518 (or 122516 counting only the distinct ones).

The product of its digits is 497664, while the sum is 44.

The square root of 428634692 is about 20703.4946808504. The cubic root of 428634692 is about 753.9845372040.

The spelling of 428634692 in words is "four hundred twenty-eight million, six hundred thirty-four thousand, six hundred ninety-two".