1386980928 has 56 divisors (see below), whose sum is σ = 4077472160. Its totient is φ = 462326400.

The previous prime is 1386980911. The next prime is 1386980939. The reversal of 1386980928 is 8290896831.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 399598 + ... + 403053.

Almost surely, 2^1386980928 is an apocalyptic number.

1386980928 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1386980928 is an abundant number, since it is smaller than the sum of its proper divisors (2690491232).

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

1386980928 is an equidigital number, since it uses as much as digits as its factorization.

1386980928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 802672 (or 802656 counting only the distinct ones).

The product of its (nonzero) digits is 1492992, while the sum is 54.

The square root of 1386980928 is about 37242.1928462866. The cubic root of 1386980928 is about 1115.2104485901.

The spelling of 1386980928 in words is "one billion, three hundred eighty-six million, nine hundred eighty thousand, nine hundred twenty-eight".