1428277886 has 16 divisors (see below), whose sum is σ = 2508196320. Its totient is φ = 597189120.

The previous prime is 1428277853. The next prime is 1428277891. The reversal of 1428277886 is 6887728241.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1243571 + ... + 1244718.

It is an arithmetic number, because the mean of its divisors is an integer number (156762270).

Almost surely, 2^1428277886 is an apocalyptic number.

1428277886 is a deficient number, since it is larger than the sum of its proper divisors (1079918434).

1428277886 is a wasteful number, since it uses less digits than its factorization.

1428277886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2488339.

The product of its digits is 2408448, while the sum is 53.

The square root of 1428277886 is about 37792.5638982062. The cubic root of 1428277886 is about 1126.1707347630.

The spelling of 1428277886 in words is "one billion, four hundred twenty-eight million, two hundred seventy-seven thousand, eight hundred eighty-six".