1356720 has 40 divisors (see below), whose sum is σ = 4206576. Its totient is φ = 361728.

The previous prime is 1356713. The next prime is 1356721. The reversal of 1356720 is 276531.

It is a tau number, because it is divible by the number of its divisors (40).

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

It is not an unprimeable number, because it can be changed into a prime (1356721) 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, 2587 + ... + 3066.

2^1356720 is an apocalyptic number.

1356720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1356720 is an abundant number, since it is smaller than the sum of its proper divisors (2849856).

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

1356720 is a wasteful number, since it uses less digits than its factorization.

1356720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5669 (or 5663 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 24.

The square root of 1356720 is about 1164.7832416377. The cubic root of 1356720 is about 110.7040244194.

The spelling of 1356720 in words is "one million, three hundred fifty-six thousand, seven hundred twenty".