1428564 has 12 divisors (see below), whose sum is σ = 3333344. Its totient is φ = 476184.

The previous prime is 1428541. The next prime is 1428571. The reversal of 1428564 is 4658241.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

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, 59512 + ... + 59535.

2^1428564 is an apocalyptic number.

It is an amenable number.

1428564 is an abundant number, since it is smaller than the sum of its proper divisors (1904780).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1428564 is a wasteful number, since it uses less digits than its factorization.

1428564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119054 (or 119052 counting only the distinct ones).

The product of its digits is 7680, while the sum is 30.

The square root of 1428564 is about 1195.2255017360. The cubic root of 1428564 is about 112.6245928277.

The spelling of 1428564 in words is "one million, four hundred twenty-eight thousand, five hundred sixty-four".