1270720 has 84 divisors (see below), whose sum is σ = 3483864. Its totient is φ = 437760.

The previous prime is 1270679. The next prime is 1270747. The reversal of 1270720 is 270721.

1270720 = 180² + 181² + ... + 212².

It is a super-2 number, since 2×1270720² = 3229458636800, which contains 22 as substring.

It is a hoax number, since the sum of its digits (19) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 66871 + ... + 66889.

2^1270720 is an apocalyptic number.

1270720 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 1270720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1741932).

1270720 is an abundant number, since it is smaller than the sum of its proper divisors (2213144).

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

1270720 is a wasteful number, since it uses less digits than its factorization.

1270720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66 (or 37 counting only the distinct ones).

The product of its (nonzero) digits is 196, while the sum is 19.

The square root of 1270720 is about 1127.2621700385. The cubic root of 1270720 is about 108.3136742762.

Subtracting from 1270720 its reverse (270721), we obtain a palindrome (999999).

The spelling of 1270720 in words is "one million, two hundred seventy thousand, seven hundred twenty".