1428351277 has 4 divisors (see below), whose sum is σ = 1503527680. Its totient is φ = 1353174876.

The previous prime is 1428351263. The next prime is 1428351311. The reversal of 1428351277 is 7721538241.

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.

It is a cyclic number.

It is not a de Polignac number, because 1428351277 - 2²⁷ = 1294133549 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1428351227) 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, 37588173 + ... + 37588210.

It is an arithmetic number, because the mean of its divisors is an integer number (375881920).

Almost surely, 2^1428351277 is an apocalyptic number.

It is an amenable number.

1428351277 is a deficient number, since it is larger than the sum of its proper divisors (75176403).

1428351277 is an equidigital number, since it uses as much as digits as its factorization.

1428351277 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75176402.

The product of its digits is 94080, while the sum is 40.

The square root of 1428351277 is about 37793.5348571684. The cubic root of 1428351277 is about 1126.1900235820.

The spelling of 1428351277 in words is "one billion, four hundred twenty-eight million, three hundred fifty-one thousand, two hundred seventy-seven".