1365440 has 56 divisors (see below), whose sum is σ = 3456432. Its totient is φ = 512000.

The previous prime is 1365431. The next prime is 1365449. The reversal of 1365440 is 445631.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1365431) and next prime (1365449).

It is a hoax number, since the sum of its digits (23) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1365449) 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, 5315 + ... + 5565.

It is an arithmetic number, because the mean of its divisors is an integer number (61722).

2^1365440 is an apocalyptic number.

1365440 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 1365440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1728216).

1365440 is an abundant number, since it is smaller than the sum of its proper divisors (2090992).

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

1365440 is a wasteful number, since it uses less digits than its factorization.

1365440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285 (or 275 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 1365440 is about 1168.5204319994. The cubic root of 1365440 is about 110.9406928262.

The spelling of 1365440 in words is "one million, three hundred sixty-five thousand, four hundred forty".