36389840 has 40 divisors (see below), whose sum is σ = 85072680. Its totient is φ = 14475776.

The previous prime is 36389839. The next prime is 36389851. The reversal of 36389840 is 4898363.

It can be written as a sum of positive squares in 4 ways, for example, as 19678096 + 16711744 = 4436^2 + 4088^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14606 + ... + 16914.

It is an arithmetic number, because the mean of its divisors is an integer number (2126817).

Almost surely, 2^36389840 is an apocalyptic number.

It is an amenable number.

36389840 is an abundant number, since it is smaller than the sum of its proper divisors (48682840).

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

36389840 is a wasteful number, since it uses less digits than its factorization.

36389840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2519 (or 2513 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 41.

The square root of 36389840 is about 6032.3991910350. The cubic root of 36389840 is about 331.3803218080.

The spelling of 36389840 in words is "thirty-six million, three hundred eighty-nine thousand, eight hundred forty".