1381972 has 12 divisors (see below), whose sum is σ = 2427040. Its totient is φ = 688536.

The previous prime is 1381969. The next prime is 1381973. The reversal of 1381972 is 2791831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1381973) 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, 1363 + ... + 2149.

2^1381972 is an apocalyptic number.

It is an amenable number.

1381972 is a deficient number, since it is larger than the sum of its proper divisors (1045068).

1381972 is a wasteful number, since it uses less digits than its factorization.

1381972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1230 (or 1228 counting only the distinct ones).

The product of its digits is 3024, while the sum is 31.

The square root of 1381972 is about 1175.5730517497. The cubic root of 1381972 is about 111.3866342921.

The spelling of 1381972 in words is "one million, three hundred eighty-one thousand, nine hundred seventy-two".