1320392 has 8 divisors (see below), whose sum is σ = 2475750. Its totient is φ = 660192.

The previous prime is 1320391. The next prime is 1320409. The reversal of 1320392 is 2930231.

It can be written as a sum of positive squares in only one way, i.e., 763876 + 556516 = 874^2 + 746^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (1320391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82517 + ... + 82532.

2^1320392 is an apocalyptic number.

It is an amenable number.

1320392 is a deficient number, since it is larger than the sum of its proper divisors (1155358).

1320392 is a wasteful number, since it uses less digits than its factorization.

1320392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165055 (or 165051 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 20.

The square root of 1320392 is about 1149.0831127469. The cubic root of 1320392 is about 109.7069887828.

The spelling of 1320392 in words is "one million, three hundred twenty thousand, three hundred ninety-two".