36809836 has 48 divisors (see below), whose sum is σ = 76317696. Its totient is φ = 15208704.

The previous prime is 36809827. The next prime is 36809837. The reversal of 36809836 is 63890863.

It is a junction number, because it is equal to n+sod(n) for n = 36809792 and 36809801.

It is not an unprimeable number, because it can be changed into a prime (36809837) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 109060 + ... + 109396.

It is an arithmetic number, because the mean of its divisors is an integer number (1589952).

Almost surely, 2^36809836 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 36809836, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38158848).

36809836 is an abundant number, since it is smaller than the sum of its proper divisors (39507860).

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

36809836 is a wasteful number, since it uses less digits than its factorization.

36809836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 478 (or 476 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 43.

The square root of 36809836 is about 6067.1110093685. Note that the first 3 decimals coincide. The cubic root of 36809836 is about 332.6503317044.

The spelling of 36809836 in words is "thirty-six million, eight hundred nine thousand, eight hundred thirty-six".