36721812 has 12 divisors (see below), whose sum is σ = 85684256. Its totient is φ = 12240600.

The previous prime is 36721799. The next prime is 36721837. The reversal of 36721812 is 21812763.

It is a tau number, because it is divible by the number of its divisors (12).

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 36721812.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1530064 + ... + 1530087.

Almost surely, 2^36721812 is an apocalyptic number.

It is an amenable number.

36721812 is an abundant number, since it is smaller than the sum of its proper divisors (48962444).

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

36721812 is a wasteful number, since it uses less digits than its factorization.

36721812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3060158 (or 3060156 counting only the distinct ones).

The product of its digits is 4032, while the sum is 30.

The square root of 36721812 is about 6059.8524734518. The cubic root of 36721812 is about 332.3849625598.

The spelling of 36721812 in words is "thirty-six million, seven hundred twenty-one thousand, eight hundred twelve".