1380844 has 12 divisors (see below), whose sum is σ = 2543800. Its totient is φ = 654048.

The previous prime is 1380817. The next prime is 1380853. The reversal of 1380844 is 4480831.

1380844 = T₁₉₁ + T₁₉₂ + ... + T₂₄₇.

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, 9009 + ... + 9160.

2^1380844 is an apocalyptic number.

It is an amenable number.

1380844 is a deficient number, since it is larger than the sum of its proper divisors (1162956).

1380844 is a wasteful number, since it uses less digits than its factorization.

1380844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18192 (or 18190 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 28.

The square root of 1380844 is about 1175.0931877941. The cubic root of 1380844 is about 111.3563205271.

The spelling of 1380844 in words is "one million, three hundred eighty thousand, eight hundred forty-four".