36221940 has 36 divisors (see below), whose sum is σ = 109873764. Its totient is φ = 9659136.

The previous prime is 36221909. The next prime is 36221959. The reversal of 36221940 is 4912263.

36221940 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 27436644 + 8785296 = 5238^2 + 2964^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 100437 + ... + 100796.

It is an arithmetic number, because the mean of its divisors is an integer number (3052049).

Almost surely, 2^36221940 is an apocalyptic number.

36221940 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

36221940 is an abundant number, since it is smaller than the sum of its proper divisors (73651824).

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

36221940 is a wasteful number, since it uses less digits than its factorization.

36221940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201248 (or 201243 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 36221940 is about 6018.4665821121. The cubic root of 36221940 is about 330.8698812833.

The spelling of 36221940 in words is "thirty-six million, two hundred twenty-one thousand, nine hundred forty".