1381288 has 16 divisors (see below), whose sum is σ = 2702880. Its totient is φ = 660528.

The previous prime is 1381279. The next prime is 1381291. The reversal of 1381288 is 8821831.

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, 3570 + ... + 3937.

It is an arithmetic number, because the mean of its divisors is an integer number (168930).

2^1381288 is an apocalyptic number.

It is an amenable number.

1381288 is a deficient number, since it is larger than the sum of its proper divisors (1321592).

1381288 is a wasteful number, since it uses less digits than its factorization.

1381288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7536 (or 7532 counting only the distinct ones).

The product of its digits is 3072, while the sum is 31.

The square root of 1381288 is about 1175.2820937971. The cubic root of 1381288 is about 111.3682545104.

The spelling of 1381288 in words is "one million, three hundred eighty-one thousand, two hundred eighty-eight".