1191872 has 28 divisors (see below), whose sum is σ = 2581656. Its totient is φ = 541440.

The previous prime is 1191847. The next prime is 1191899. The reversal of 1191872 is 2781911.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 143 + ... + 1550.

It is an arithmetic number, because the mean of its divisors is an integer number (92202).

2^1191872 is an apocalyptic number.

It is an amenable number.

1191872 is an abundant number, since it is smaller than the sum of its proper divisors (1389784).

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

1191872 is a wasteful number, since it uses less digits than its factorization.

1191872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1716 (or 1706 counting only the distinct ones).

The product of its digits is 1008, while the sum is 29.

The square root of 1191872 is about 1091.7289040783. The cubic root of 1191872 is about 106.0253884837.

It can be divided in two parts, 119 and 1872, that added together give a palindrome (1991).

The spelling of 1191872 in words is "one million, one hundred ninety-one thousand, eight hundred seventy-two".