1392520 has 32 divisors (see below), whose sum is σ = 3237120. Its totient is φ = 538560.

The previous prime is 1392497. The next prime is 1392527. The reversal of 1392520 is 252931.

It is a super-2 number, since 2×1392520² = 3878223900800, which contains 22 as substring.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 1392491 and 1392500.

It is not an unprimeable number, because it can be changed into a prime (1392527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 679 + ... + 1801.

It is an arithmetic number, because the mean of its divisors is an integer number (101160).

2^1392520 is an apocalyptic number.

1392520 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 1392520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1618560).

1392520 is an abundant number, since it is smaller than the sum of its proper divisors (1844600).

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

1392520 is a wasteful number, since it uses less digits than its factorization.

1392520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1165 (or 1161 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 1392520 is about 1180.0508463621. The cubic root of 1392520 is about 111.6693051529.

The spelling of 1392520 in words is "one million, three hundred ninety-two thousand, five hundred twenty".