36722816 has 64 divisors (see below), whose sum is σ = 81610200. Its totient is φ = 16343040.

The previous prime is 36722813. The next prime is 36722843. The reversal of 36722816 is 61822763.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 12673600 + 24049216 = 3560^2 + 4904^2 .

It is a tau number, because it is divible by the number of its divisors (64).

It is not an unprimeable number, because it can be changed into a prime (36722813) 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, 47876 + ... + 48636.

Almost surely, 2^36722816 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 36722816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40805100).

36722816 is an abundant number, since it is smaller than the sum of its proper divisors (44887384).

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

36722816 is a wasteful number, since it uses less digits than its factorization.

36722816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 817 (or 805 counting only the distinct ones).

The product of its digits is 24192, while the sum is 35.

The square root of 36722816 is about 6059.9353131861. The cubic root of 36722816 is about 332.3879917445.

The spelling of 36722816 in words is "thirty-six million, seven hundred twenty-two thousand, eight hundred sixteen".