1428306677 has 4 divisors (see below), whose sum is σ = 1632350496. Its totient is φ = 1224262860.

The previous prime is 1428306673. The next prime is 1428306797. The reversal of 1428306677 is 7766038241.

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 1428306677 - 2² = 1428306673 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1428306673) 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, 102021899 + ... + 102021912.

It is an arithmetic number, because the mean of its divisors is an integer number (408087624).

Almost surely, 2^1428306677 is an apocalyptic number.

It is an amenable number.

1428306677 is a deficient number, since it is larger than the sum of its proper divisors (204043819).

1428306677 is an equidigital number, since it uses as much as digits as its factorization.

1428306677 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204043818.

The product of its (nonzero) digits is 338688, while the sum is 44.

The square root of 1428306677 is about 37792.9448045531. The cubic root of 1428306677 is about 1126.1783017694.

The spelling of 1428306677 in words is "one billion, four hundred twenty-eight million, three hundred six thousand, six hundred seventy-seven".