1380872 has 16 divisors (see below), whose sum is σ = 2616300. Its totient is φ = 683200.

The previous prime is 1380853. The next prime is 1380881. The reversal of 1380872 is 2780831.

It can be written as a sum of positive squares in 2 ways, for example, as 1359556 + 21316 = 1166^2 + 146^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47 + ... + 1662.

2^1380872 is an apocalyptic number.

It is an amenable number.

1380872 is a deficient number, since it is larger than the sum of its proper divisors (1235428).

1380872 is a wasteful number, since it uses less digits than its factorization.

1380872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1816 (or 1812 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 29.

The square root of 1380872 is about 1175.1051016824. The cubic root of 1380872 is about 111.3570731962.

The spelling of 1380872 in words is "one million, three hundred eighty thousand, eight hundred seventy-two".