1198722 has 16 divisors (see below), whose sum is σ = 2740032. Its totient is φ = 342480.

The previous prime is 1198699. The next prime is 1198727. The reversal of 1198722 is 2278911.

It is a self number, because there is not a number n which added to its sum of digits gives 1198722.

It is not an unprimeable number, because it can be changed into a prime (1198727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14229 + ... + 14312.

It is an arithmetic number, because the mean of its divisors is an integer number (171252).

2^1198722 is an apocalyptic number.

1198722 is an abundant number, since it is smaller than the sum of its proper divisors (1541310).

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

1198722 is a wasteful number, since it uses less digits than its factorization.

1198722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28553.

The product of its digits is 2016, while the sum is 30.

The square root of 1198722 is about 1094.8616350937. The cubic root of 1198722 is about 106.2281191390.

The spelling of 1198722 in words is "one million, one hundred ninety-eight thousand, seven hundred twenty-two".