1260720 has 120 divisors (see below), whose sum is σ = 4526496. Its totient is φ = 313344.

The previous prime is 1260719. The next prime is 1260731. The reversal of 1260720 is 270621.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1260693 and 1260702.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12189 + ... + 12291.

2^1260720 is an apocalyptic number.

1260720 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 1260720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2263248).

1260720 is an abundant number, since it is smaller than the sum of its proper divisors (3265776).

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

1260720 is a wasteful number, since it uses less digits than its factorization.

1260720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139 (or 130 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 18.

The square root of 1260720 is about 1122.8178837194. The cubic root of 1260720 is about 108.0287989043.

Subtracting from 1260720 its reverse (270621), we obtain a palindrome (990099).

The spelling of 1260720 in words is "one million, two hundred sixty thousand, seven hundred twenty".