445227156 has 72 divisors (see below), whose sum is σ = 1230544224. Its totient is φ = 134610240.

The previous prime is 445227109. The next prime is 445227191. The reversal of 445227156 is 651722544.

It is a happy number.

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

It is a self number, because there is not a number n which added to its sum of digits gives 445227156.

It is a congruent number.

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 23 ways as a sum of consecutive naturals, for example, 221950 + ... + 223946.

It is an arithmetic number, because the mean of its divisors is an integer number (17090892).

Almost surely, 2^445227156 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 445227156, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (615272112).

445227156 is an abundant number, since it is smaller than the sum of its proper divisors (785317068).

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

445227156 is a wasteful number, since it uses less digits than its factorization.

445227156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2581 (or 2576 counting only the distinct ones).

The product of its digits is 67200, while the sum is 36.

The square root of 445227156 is about 21100.4065363680. The cubic root of 445227156 is about 763.5905561731.

The spelling of 445227156 in words is "four hundred forty-five million, two hundred twenty-seven thousand, one hundred fifty-six".