1387672 has 32 divisors (see below), whose sum is σ = 3059280. Its totient is φ = 581760.

The previous prime is 1387669. The next prime is 1387681. The reversal of 1387672 is 2767831.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 538 + ... + 1750.

2^1387672 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1387672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1529640).

1387672 is an abundant number, since it is smaller than the sum of its proper divisors (1671608).

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

1387672 is a wasteful number, since it uses less digits than its factorization.

1387672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1243 (or 1239 counting only the distinct ones).

The product of its digits is 14112, while the sum is 34.

The square root of 1387672 is about 1177.9949066104. The cubic root of 1387672 is about 111.5395638051.

The spelling of 1387672 in words is "one million, three hundred eighty-seven thousand, six hundred seventy-two".