1428760 has 32 divisors (see below), whose sum is σ = 3356640. Its totient is φ = 546304.

The previous prime is 1428751. The next prime is 1428767. The reversal of 1428760 is 678241.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1428767) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 144 + ... + 1696.

It is an arithmetic number, because the mean of its divisors is an integer number (104895).

2^1428760 is an apocalyptic number.

1428760 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1428760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1678320).

1428760 is an abundant number, since it is smaller than the sum of its proper divisors (1927880).

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

1428760 is a wasteful number, since it uses less digits than its factorization.

1428760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1587 (or 1583 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 1428760 is about 1195.3074918196. The cubic root of 1428760 is about 112.6297433170.

The spelling of 1428760 in words is "one million, four hundred twenty-eight thousand, seven hundred sixty".