1387427672 has 16 divisors (see below), whose sum is σ = 2602708200. Its totient is φ = 693372160.

The previous prime is 1387427653. The next prime is 1387427677. The reversal of 1387427672 is 2767247831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1387427677) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25022 + ... + 58317.

Almost surely, 2^1387427672 is an apocalyptic number.

It is an amenable number.

1387427672 is a deficient number, since it is larger than the sum of its proper divisors (1215280528).

1387427672 is a wasteful number, since it uses less digits than its factorization.

1387427672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85426 (or 85422 counting only the distinct ones).

The product of its digits is 790272, while the sum is 47.

The square root of 1387427672 is about 37248.1901842224. The cubic root of 1387427672 is about 1115.3301714800.

The spelling of 1387427672 in words is "one billion, three hundred eighty-seven million, four hundred twenty-seven thousand, six hundred seventy-two".