1428580 has 12 divisors (see below), whose sum is σ = 3000060. Its totient is φ = 571424.

The previous prime is 1428571. The next prime is 1428587. The reversal of 1428580 is 858241.

It can be written as a sum of positive squares in 2 ways, for example, as 209764 + 1218816 = 458^2 + 1104^2 .

It is not an unprimeable number, because it can be changed into a prime (1428587) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35695 + ... + 35734.

It is an arithmetic number, because the mean of its divisors is an integer number (250005).

2^1428580 is an apocalyptic number.

1428580 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1428580 is an abundant number, since it is smaller than the sum of its proper divisors (1571480).

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

1428580 is a wasteful number, since it uses less digits than its factorization.

1428580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71438 (or 71436 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 28.

The square root of 1428580 is about 1195.2321950148. The cubic root of 1428580 is about 112.6250132935.

It can be divided in two parts, 14285 and 80, that added together give a triangular number (14365 = T₁₆₉).

The spelling of 1428580 in words is "one million, four hundred twenty-eight thousand, five hundred eighty".