1180920 has 64 divisors (see below), whose sum is σ = 3820320. Its totient is φ = 290304.

The previous prime is 1180913. The next prime is 1180931. The reversal of 1180920 is 290811.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1182 + ... + 1938.

2^1180920 is an apocalyptic number.

1180920 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 1180920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1910160).

1180920 is an abundant number, since it is smaller than the sum of its proper divisors (2639400).

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

1180920 is a wasteful number, since it uses less digits than its factorization.

1180920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 784 (or 780 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 21.

The square root of 1180920 is about 1086.7014309368. The cubic root of 1180920 is about 105.6996362183.

The spelling of 1180920 in words is "one million, one hundred eighty thousand, nine hundred twenty".