1386385272 has 48 divisors (see below), whose sum is σ = 3758943240. Its totient is φ = 461617728.

The previous prime is 1386385181. The next prime is 1386385303. The reversal of 1386385272 is 2725836831.

1386385272 is a `hidden beast` number, since 1 + 3 + 8 + 638 + 5 + 2 + 7 + 2 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 58018 + ... + 78350.

Almost surely, 2^1386385272 is an apocalyptic number.

1386385272 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1386385272 is an abundant number, since it is smaller than the sum of its proper divisors (2372557968).

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

1386385272 is a wasteful number, since it uses less digits than its factorization.

1386385272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21292 (or 21285 counting only the distinct ones).

The product of its digits is 483840, while the sum is 45.

The square root of 1386385272 is about 37234.1949288554. The cubic root of 1386385272 is about 1115.0507787877.

The spelling of 1386385272 in words is "one billion, three hundred eighty-six million, three hundred eighty-five thousand, two hundred seventy-two".