1428277 has 4 divisors (see below), whose sum is σ = 1490400. Its totient is φ = 1366156.

The previous prime is 1428257. The next prime is 1428281. The reversal of 1428277 is 7728241.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 7728241 = 1973 ⋅3917.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1428277 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1428247) 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, 31027 + ... + 31072.

It is an arithmetic number, because the mean of its divisors is an integer number (372600).

2^1428277 is an apocalyptic number.

It is an amenable number.

1428277 is a deficient number, since it is larger than the sum of its proper divisors (62123).

1428277 is an equidigital number, since it uses as much as digits as its factorization.

1428277 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62122.

The product of its digits is 6272, while the sum is 31.

The square root of 1428277 is about 1195.1054346793. The cubic root of 1428277 is about 112.6170501898.

The spelling of 1428277 in words is "one million, four hundred twenty-eight thousand, two hundred seventy-seven".