1162720 has 72 divisors (see below), whose sum is σ = 3043656. Its totient is φ = 419328.

The previous prime is 1162709. The next prime is 1162727. The reversal of 1162720 is 272611.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1162727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27019 + ... + 27061.

It is an arithmetic number, because the mean of its divisors is an integer number (42273).

2^1162720 is an apocalyptic number.

1162720 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 1162720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1521828).

1162720 is an abundant number, since it is smaller than the sum of its proper divisors (1880936).

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

1162720 is a wasteful number, since it uses less digits than its factorization.

1162720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84 (or 63 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 19.

The square root of 1162720 is about 1078.2949503730. The cubic root of 1162720 is about 105.1538183955.

The spelling of 1162720 in words is "one million, one hundred sixty-two thousand, seven hundred twenty".