36021816 has 48 divisors (see below), whose sum is σ = 97835400. Its totient is φ = 11973312.

The previous prime is 36021809. The next prime is 36021847. The reversal of 36021816 is 61812063.

It is a self number, because there is not a number n which added to its sum of digits gives 36021816.

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 11 ways as a sum of consecutive naturals, for example, 48375 + ... + 49113.

Almost surely, 2^36021816 is an apocalyptic number.

36021816 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

36021816 is an abundant number, since it is smaller than the sum of its proper divisors (61813584).

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

36021816 is a wasteful number, since it uses less digits than its factorization.

36021816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1428 (or 1421 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 36021816 is about 6001.8177246564. The cubic root of 36021816 is about 330.2594103512.

Adding to 36021816 its reverse (61812063), we get a palindrome (97833879).

The spelling of 36021816 in words is "thirty-six million, twenty-one thousand, eight hundred sixteen".