428464 has 20 divisors (see below), whose sum is σ = 845680. Its totient is φ = 210240.

The previous prime is 428429. The next prime is 428471. The reversal of 428464 is 464824.

It is an unprimeable number.

428464 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 757 + ... + 1195.

It is an arithmetic number, because the mean of its divisors is an integer number (42284).

2⁴²⁸⁴⁶⁴ is an apocalyptic number.

It is an amenable number.

428464 is a deficient number, since it is larger than the sum of its proper divisors (417216).

428464 is a wasteful number, since it uses less digits than its factorization.

428464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 508 (or 502 counting only the distinct ones).

The product of its digits is 6144, while the sum is 28.

The square root of 428464 is about 654.5716156388. The cubic root of 428464 is about 75.3884439367.

The spelling of 428464 in words is "four hundred twenty-eight thousand, four hundred sixty-four".