36821540 has 36 divisors (see below), whose sum is σ = 89952156. Its totient is φ = 12624192.

The previous prime is 36821531. The next prime is 36821557. The reversal of 36821540 is 4512863.

It can be written as a sum of positive squares in 2 ways, for example, as 26543104 + 10278436 = 5152^2 + 3206^2 .

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 11 ways as a sum of consecutive naturals, for example, 17807 + ... + 19766.

It is an arithmetic number, because the mean of its divisors is an integer number (2498671).

Almost surely, 2^36821540 is an apocalyptic number.

It is an amenable number.

36821540 is an abundant number, since it is smaller than the sum of its proper divisors (53130616).

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

36821540 is a wasteful number, since it uses less digits than its factorization.

36821540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37596 (or 37587 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 36821540 is about 6068.0754774475. The cubic root of 36821540 is about 332.6855843011.

The spelling of 36821540 in words is "thirty-six million, eight hundred twenty-one thousand, five hundred forty".