1364440 has 64 divisors (see below), whose sum is σ = 3836160. Its totient is φ = 424320.

The previous prime is 1364431. The next prime is 1364453. The reversal of 1364440 is 444631.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2859 + ... + 3301.

It is an arithmetic number, because the mean of its divisors is an integer number (59940).

2^1364440 is an apocalyptic number.

1364440 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 1364440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1918080).

1364440 is an abundant number, since it is smaller than the sum of its proper divisors (2471720).

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

1364440 is a wasteful number, since it uses less digits than its factorization.

1364440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 472 (or 468 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 1364440 is about 1168.0924620936. The cubic root of 1364440 is about 110.9136031977.

The spelling of 1364440 in words is "one million, three hundred sixty-four thousand, four hundred forty".