36121500 has 144 divisors (see below), whose sum is σ = 119246400. Its totient is φ = 9187200.

The previous prime is 36121499. The next prime is 36121529. The reversal of 36121500 is 512163.

36121500 is a `hidden beast` number, since 3 + 612 + 1 + 50 + 0 = 666.

36121500 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

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 47 ways as a sum of consecutive naturals, for example, 103326 + ... + 103674.

It is an arithmetic number, because the mean of its divisors is an integer number (828100).

Almost surely, 2^36121500 is an apocalyptic number.

36121500 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 36121500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59623200).

36121500 is an abundant number, since it is smaller than the sum of its proper divisors (83124900).

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

36121500 is a wasteful number, since it uses less digits than its factorization.

36121500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 397 (or 382 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 36121500 is about 6010.1164714172. The cubic root of 36121500 is about 330.5637745866.

Adding to 36121500 its reverse (512163), we get a palindrome (36633663).

The spelling of 36121500 in words is "thirty-six million, one hundred twenty-one thousand, five hundred".