1172826 has 32 divisors (see below), whose sum is σ = 2681280. Its totient is φ = 379728.

The previous prime is 1172819. The next prime is 1172833. The reversal of 1172826 is 6282711.

It is an interprime number because it is at equal distance from previous prime (1172819) and next prime (1172833).

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

It is a self number, because there is not a number n which added to its sum of digits gives 1172826.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 1705 + ... + 2291.

It is an arithmetic number, because the mean of its divisors is an integer number (83790).

2^1172826 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1172826, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1340640).

1172826 is an abundant number, since it is smaller than the sum of its proper divisors (1508454).

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

1172826 is a wasteful number, since it uses less digits than its factorization.

1172826 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 635 (or 629 counting only the distinct ones).

The product of its digits is 1344, while the sum is 27.

The square root of 1172826 is about 1082.9709137368. The cubic root of 1172826 is about 105.4575947214.

The spelling of 1172826 in words is "one million, one hundred seventy-two thousand, eight hundred twenty-six".