36440000 has 70 divisors (see below), whose sum is σ = 90458544. Its totient is φ = 14560000.

The previous prime is 36439999. The next prime is 36440003. The reversal of 36440000 is 4463.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36440003) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 39545 + ... + 40455.

Almost surely, 2^36440000 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 36440000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45229272).

36440000 is an abundant number, since it is smaller than the sum of its proper divisors (54018544).

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

36440000 is an frugal number, since it uses more digits than its factorization.

36440000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 943 (or 918 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 36440000 is about 6036.5553091146. Note that the first 3 decimals coincide. The cubic root of 36440000 is about 331.5325108574.

Adding to 36440000 its reverse (4463), we get a palindrome (36444463).

The spelling of 36440000 in words is "thirty-six million, four hundred forty thousand".