1187872 has 24 divisors (see below), whose sum is σ = 2673216. Its totient is φ = 508992.

The previous prime is 1187867. The next prime is 1187873. The reversal of 1187872 is 2787811.

It is a super-2 number, since 2×1187872² = 2822079776768, which contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (1187873) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2428 + ... + 2875.

It is an arithmetic number, because the mean of its divisors is an integer number (111384).

2^1187872 is an apocalyptic number.

It is an amenable number.

1187872 is an abundant number, since it is smaller than the sum of its proper divisors (1485344).

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

1187872 is an equidigital number, since it uses as much as digits as its factorization.

1187872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5320 (or 5312 counting only the distinct ones).

The product of its digits is 6272, while the sum is 34.

The square root of 1187872 is about 1089.8954078259. The cubic root of 1187872 is about 105.9066461808.

The spelling of 1187872 in words is "one million, one hundred eighty-seven thousand, eight hundred seventy-two".