36581972 has 12 divisors (see below), whose sum is σ = 73164000. Its totient is φ = 15677976.

The previous prime is 36581959. The next prime is 36581999. The reversal of 36581972 is 27918563.

36581972 is an admirable number.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

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 3 ways as a sum of consecutive naturals, for example, 653222 + ... + 653277.

It is an arithmetic number, because the mean of its divisors is an integer number (6097000).

Almost surely, 2^36581972 is an apocalyptic number.

It is an amenable number.

36581972 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

36581972 is a wasteful number, since it uses less digits than its factorization.

36581972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1306510 (or 1306508 counting only the distinct ones).

The product of its digits is 90720, while the sum is 41.

The square root of 36581972 is about 6048.3032331390. The cubic root of 36581972 is about 331.9625084678.

The spelling of 36581972 in words is "thirty-six million, five hundred eighty-one thousand, nine hundred seventy-two".