1080156 has 72 divisors (see below), whose sum is σ = 3217536. Its totient is φ = 278880.

The previous prime is 1080143. The next prime is 1080173. The reversal of 1080156 is 6510801.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a nialpdrome in base 12.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 6385 + ... + 6551.

It is an arithmetic number, because the mean of its divisors is an integer number (44688).

2^1080156 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1080156, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1608768).

1080156 is an abundant number, since it is smaller than the sum of its proper divisors (2137380).

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

1080156 is a wasteful number, since it uses less digits than its factorization.

1080156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199 (or 190 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 21.

The square root of 1080156 is about 1039.3055373662. The cubic root of 1080156 is about 102.6034964933.

Adding to 1080156 its reverse (6510801), we get a palindrome (7590957).

The spelling of 1080156 in words is "one million, eighty thousand, one hundred fifty-six".