1392320 has 56 divisors (see below), whose sum is σ = 3505200. Its totient is φ = 525312.

The previous prime is 1392311. The next prime is 1392323. The reversal of 1392320 is 232931.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 1392292 and 1392301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1392323) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5966 + ... + 6194.

2^1392320 is an apocalyptic number.

1392320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1392320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1752600).

1392320 is an abundant number, since it is smaller than the sum of its proper divisors (2112880).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1392320 is a wasteful number, since it uses less digits than its factorization.

1392320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265 (or 255 counting only the distinct ones).

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

The square root of 1392320 is about 1179.9661012080. The cubic root of 1392320 is about 111.6639587472.

The spelling of 1392320 in words is "one million, three hundred ninety-two thousand, three hundred twenty".