1390260 has 96 divisors (see below), whose sum is σ = 4354560. Its totient is φ = 329728.

The previous prime is 1390253. The next prime is 1390283. The reversal of 1390260 is 620931.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 29557 + ... + 29603.

It is an arithmetic number, because the mean of its divisors is an integer number (45360).

2^1390260 is an apocalyptic number.

1390260 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 1390260, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2177280).

1390260 is an abundant number, since it is smaller than the sum of its proper divisors (2964300).

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

1390260 is a wasteful number, since it uses less digits than its factorization.

1390260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105 (or 103 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 21.

The square root of 1390260 is about 1179.0928716602. The cubic root of 1390260 is about 111.6088609503.

The spelling of 1390260 in words is "one million, three hundred ninety thousand, two hundred sixty".