1390372 has 12 divisors (see below), whose sum is σ = 2447116. Its totient is φ = 691200.

The previous prime is 1390369. The next prime is 1390387. The reversal of 1390372 is 2730931.

It can be written as a sum of positive squares in 2 ways, for example, as 254016 + 1136356 = 504^2 + 1066^2 .

It is a hoax number, since the sum of its digits (25) coincides with the sum of the digits of its distinct prime factors.

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, 129 + ... + 1672.

2^1390372 is an apocalyptic number.

It is an amenable number.

1390372 is a deficient number, since it is larger than the sum of its proper divisors (1056744).

1390372 is a wasteful number, since it uses less digits than its factorization.

1390372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1998 (or 1996 counting only the distinct ones).

The product of its (nonzero) digits is 1134, while the sum is 25.

The square root of 1390372 is about 1179.1403648421. The cubic root of 1390372 is about 111.6118579573.

The spelling of 1390372 in words is "one million, three hundred ninety thousand, three hundred seventy-two".