1189872 has 30 divisors (see below), whose sum is σ = 3330392. Its totient is φ = 396576.

The previous prime is 1189871. The next prime is 1189879. The reversal of 1189872 is 2789811.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1189871) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3988 + ... + 4275.

2^1189872 is an apocalyptic number.

1189872 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1189872 is an abundant number, since it is smaller than the sum of its proper divisors (2140520).

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

1189872 is a wasteful number, since it uses less digits than its factorization.

1189872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8277 (or 8268 counting only the distinct ones).

The product of its digits is 8064, while the sum is 36.

The square root of 1189872 is about 1090.8125411820. The cubic root of 1189872 is about 105.9660505970.

The spelling of 1189872 in words is "one million, one hundred eighty-nine thousand, eight hundred seventy-two".