1340880 has 80 divisors (see below), whose sum is σ = 4297344. Its totient is φ = 345600.

The previous prime is 1340879. The next prime is 1340891. The reversal of 1340880 is 880431.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 1340880.

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, 8805 + ... + 8955.

2^1340880 is an apocalyptic number.

1340880 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 1340880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2148672).

1340880 is an abundant number, since it is smaller than the sum of its proper divisors (2956464).

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

1340880 is a wasteful number, since it uses less digits than its factorization.

1340880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204 (or 198 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 24.

The square root of 1340880 is about 1157.9637300019. The cubic root of 1340880 is about 110.2715056181.

The spelling of 1340880 in words is "one million, three hundred forty thousand, eight hundred eighty".