428666032 has 40 divisors (see below), whose sum is σ = 847602000. Its totient is φ = 209959680.

The previous prime is 428666027. The next prime is 428666107. The reversal of 428666032 is 230666824.

It is a junction number, because it is equal to n+sod(n) for n = 428665982 and 428666000.

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, 285219 + ... + 286717.

It is an arithmetic number, because the mean of its divisors is an integer number (21190050).

Almost surely, 2^428666032 is an apocalyptic number.

It is an amenable number.

428666032 is a deficient number, since it is larger than the sum of its proper divisors (418935968).

428666032 is a wasteful number, since it uses less digits than its factorization.

428666032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1861 (or 1855 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 37.

The square root of 428666032 is about 20704.2515440670. The cubic root of 428666032 is about 754.0029128355.

The spelling of 428666032 in words is "four hundred twenty-eight million, six hundred sixty-six thousand, thirty-two".