1428700 has 72 divisors (see below), whose sum is σ = 3840032. Its totient is φ = 449280.

The previous prime is 1428689. The next prime is 1428703. The reversal of 1428700 is 78241.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1428703) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9022 + ... + 9178.

2^1428700 is an apocalyptic number.

1428700 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 1428700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1920016).

1428700 is an abundant number, since it is smaller than the sum of its proper divisors (2411332).

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

1428700 is a wasteful number, since it uses less digits than its factorization.

1428700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191 (or 184 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 22.

The square root of 1428700 is about 1195.2823934117. The cubic root of 1428700 is about 112.6281666866.

The spelling of 1428700 in words is "one million, four hundred twenty-eight thousand, seven hundred".