1308398928 has 20 divisors (see below), whose sum is σ = 3380030688. Its totient is φ = 436132960.

The previous prime is 1308398911. The next prime is 1308398947. The reversal of 1308398928 is 8298938031.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13629108 + ... + 13629203.

Almost surely, 2^1308398928 is an apocalyptic number.

It is an amenable number.

1308398928 is an abundant number, since it is smaller than the sum of its proper divisors (2071631760).

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

1308398928 is a wasteful number, since it uses less digits than its factorization.

1308398928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27258322 (or 27258316 counting only the distinct ones).

The product of its (nonzero) digits is 746496, while the sum is 51.

The square root of 1308398928 is about 36171.7974117958. The cubic root of 1308398928 is about 1093.7382317841.

The spelling of 1308398928 in words is "one billion, three hundred eight million, three hundred ninety-eight thousand, nine hundred twenty-eight".