1308378928 has 40 divisors (see below), whose sum is σ = 2555193600. Its totient is φ = 648997440.

The previous prime is 1308378923. The next prime is 1308378937. The reversal of 1308378928 is 8298738031.

It is not an unprimeable number, because it can be changed into a prime (1308378923) 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, 2021901 + ... + 2022547.

It is an arithmetic number, because the mean of its divisors is an integer number (63879840).

Almost surely, 2^1308378928 is an apocalyptic number.

It is an amenable number.

1308378928 is a deficient number, since it is larger than the sum of its proper divisors (1246814672).

1308378928 is a wasteful number, since it uses less digits than its factorization.

1308378928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1465 (or 1459 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 49.

The square root of 1308378928 is about 36171.5209522630. The cubic root of 1308378928 is about 1093.7326588467.

The spelling of 1308378928 in words is "one billion, three hundred eight million, three hundred seventy-eight thousand, nine hundred twenty-eight".