428321692 has 6 divisors (see below), whose sum is σ = 749562968. Its totient is φ = 214160844.

The previous prime is 428321653. The next prime is 428321701. The reversal of 428321692 is 296123824.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53540208 + ... + 53540215.

Almost surely, 2^428321692 is an apocalyptic number.

It is an amenable number.

428321692 is a deficient number, since it is larger than the sum of its proper divisors (321241276).

428321692 is a wasteful number, since it uses less digits than its factorization.

428321692 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107080427 (or 107080425 counting only the distinct ones).

The product of its digits is 41472, while the sum is 37.

The square root of 428321692 is about 20695.9341900770. The cubic root of 428321692 is about 753.8009662584.

The spelling of 428321692 in words is "four hundred twenty-eight million, three hundred twenty-one thousand, six hundred ninety-two".