1191672 has 48 divisors (see below), whose sum is σ = 3352440. Its totient is φ = 396576.

The previous prime is 1191667. The next prime is 1191679. The reversal of 1191672 is 2761911.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1191679) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 1638 + ... + 2250.

2^1191672 is an apocalyptic number.

1191672 is a gapful number since it is divisible by the number (12) 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 1191672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1676220).

1191672 is an abundant number, since it is smaller than the sum of its proper divisors (2160768).

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

1191672 is an equidigital number, since it uses as much as digits as its factorization.

1191672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 634 (or 618 counting only the distinct ones).

The product of its digits is 756, while the sum is 27.

The square root of 1191672 is about 1091.6373024041. The cubic root of 1191672 is about 106.0194576836.

The spelling of 1191672 in words is "one million, one hundred ninety-one thousand, six hundred seventy-two".