1177920 has 84 divisors (see below), whose sum is σ = 4061460. Its totient is φ = 313344.

The previous prime is 1177919. The next prime is 1177921. The reversal of 1177920 is 297711.

It is an interprime number because it is at equal distance from previous prime (1177919) and next prime (1177921).

It can be written as a sum of positive squares in 2 ways, for example, as 788544 + 389376 = 888^2 + 624^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1177921) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2676 + ... + 3084.

2^1177920 is an apocalyptic number.

1177920 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 1177920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2030730).

1177920 is an abundant number, since it is smaller than the sum of its proper divisors (2883540).

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

1177920 is a wasteful number, since it uses less digits than its factorization.

1177920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 432 (or 419 counting only the distinct ones).

The product of its (nonzero) digits is 882, while the sum is 27.

The square root of 1177920 is about 1085.3202292411. The cubic root of 1177920 is about 105.6100541391.

The spelling of 1177920 in words is "one million, one hundred seventy-seven thousand, nine hundred twenty".