36440646 has 64 divisors (see below), whose sum is σ = 83635200. Its totient is φ = 10483200.

The previous prime is 36440633. The next prime is 36440647. The reversal of 36440646 is 64604463.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36440647) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 151086 + ... + 151326.

It is an arithmetic number, because the mean of its divisors is an integer number (1306800).

Almost surely, 2^36440646 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 36440646, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41817600).

36440646 is an abundant number, since it is smaller than the sum of its proper divisors (47194554).

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

36440646 is a wasteful number, since it uses less digits than its factorization.

36440646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 365.

The product of its (nonzero) digits is 41472, while the sum is 33.

The square root of 36440646 is about 6036.6088162146. The cubic root of 36440646 is about 331.5344699568.

The spelling of 36440646 in words is "thirty-six million, four hundred forty thousand, six hundred forty-six".