1428707 has 4 divisors (see below), whose sum is σ = 1632816. Its totient is φ = 1224600.

The previous prime is 1428703. The next prime is 1428709. The reversal of 1428707 is 7078241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7078241 = 19 ⋅372539.

It is a cyclic number.

It is not a de Polignac number, because 1428707 - 2² = 1428703 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1428707.

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 3 ways as a sum of consecutive naturals, for example, 102044 + ... + 102057.

It is an arithmetic number, because the mean of its divisors is an integer number (408204).

2^1428707 is an apocalyptic number.

1428707 is a deficient number, since it is larger than the sum of its proper divisors (204109).

1428707 is an equidigital number, since it uses as much as digits as its factorization.

1428707 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204108.

The product of its (nonzero) digits is 3136, while the sum is 29.

The square root of 1428707 is about 1195.2853215864. The cubic root of 1428707 is about 112.6283506291.

The spelling of 1428707 in words is "one million, four hundred twenty-eight thousand, seven hundred seven".