1313888928 has 96 divisors (see below), whose sum is σ = 3983878080. Its totient is φ = 374722560.

The previous prime is 1313888923. The next prime is 1313888929. The reversal of 1313888928 is 8298883131.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is not an unprimeable number, because it can be changed into a prime (1313888923) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18643 + ... + 54546.

It is an arithmetic number, because the mean of its divisors is an integer number (41498730).

Almost surely, 2^1313888928 is an apocalyptic number.

It is an amenable number.

1313888928 is an abundant number, since it is smaller than the sum of its proper divisors (2669989152).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1313888928 is a wasteful number, since it uses less digits than its factorization.

1313888928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73230 (or 73222 counting only the distinct ones).

The product of its digits is 663552, while the sum is 51.

The square root of 1313888928 is about 36247.6058243851. The cubic root of 1313888928 is about 1095.2658606760.

The spelling of 1313888928 in words is "one billion, three hundred thirteen million, eight hundred eighty-eight thousand, nine hundred twenty-eight".