21036150 has 36 divisors (see below), whose sum is σ = 56518332. Its totient is φ = 5609520.

The previous prime is 21036149. The next prime is 21036151. The reversal of 21036150 is 5163012.

It is an interprime number because it is at equal distance from previous prime (21036149) and next prime (21036151).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21036151) by changing a digit.

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 17 ways as a sum of consecutive naturals, for example, 22924 + ... + 23823.

Almost surely, 2^21036150 is an apocalyptic number.

21036150 is an abundant number, since it is smaller than the sum of its proper divisors (35482182).

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

21036150 is a wasteful number, since it uses less digits than its factorization.

21036150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46765 (or 46757 counting only the distinct ones).

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

The square root of 21036150 is about 4586.5182873286. The cubic root of 21036150 is about 276.0506365821.

Adding to 21036150 its reverse (5163012), we get a palindrome (26199162).

The spelling of 21036150 in words is "twenty-one million, thirty-six thousand, one hundred fifty".