1428886376 has 32 divisors (see below), whose sum is σ = 2780433000. Its totient is φ = 687595776.

The previous prime is 1428886373. The next prime is 1428886391. The reversal of 1428886376 is 6736888241.

It can be written as a sum of positive squares in 4 ways, for example, as 402965476 + 1025920900 = 20074^2 + 32030^2 .

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (1428886373) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63830 + ... + 83258.

Almost surely, 2^1428886376 is an apocalyptic number.

It is an amenable number.

1428886376 is a deficient number, since it is larger than the sum of its proper divisors (1351546624).

1428886376 is a wasteful number, since it uses less digits than its factorization.

1428886376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19781 (or 19777 counting only the distinct ones).

The product of its digits is 3096576, while the sum is 53.

The square root of 1428886376 is about 37800.6134341759. The cubic root of 1428886376 is about 1126.3306397660.

The spelling of 1428886376 in words is "one billion, four hundred twenty-eight million, eight hundred eighty-six thousand, three hundred seventy-six".