1428080 has 20 divisors (see below), whose sum is σ = 3320472. Its totient is φ = 571200.

The previous prime is 1428079. The next prime is 1428109. The reversal of 1428080 is 808241.

It is a tau number, because it is divible by the number of its divisors (20).

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, 8846 + ... + 9005.

2^1428080 is an apocalyptic number.

1428080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1428080 is an abundant number, since it is smaller than the sum of its proper divisors (1892392).

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

1428080 is a wasteful number, since it uses less digits than its factorization.

1428080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17864 (or 17858 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 23.

The square root of 1428080 is about 1195.0230123307. The cubic root of 1428080 is about 112.6118722542.

The spelling of 1428080 in words is "one million, four hundred twenty-eight thousand, eighty".