21360150 has 72 divisors (see below), whose sum is σ = 65595504. Its totient is φ = 4881600.

The previous prime is 21360149. The next prime is 21360173. The reversal of 21360150 is 5106312.

21360150 is a `hidden beast` number, since 2 + 13 + 601 + 50 = 666.

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 35 ways as a sum of consecutive naturals, for example, 241 + ... + 6540.

Almost surely, 2^21360150 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21360150, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32797752).

21360150 is an abundant number, since it is smaller than the sum of its proper divisors (44235354).

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

21360150 is a wasteful number, since it uses less digits than its factorization.

21360150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6806 (or 6798 counting only the distinct ones).

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

The square root of 21360150 is about 4621.7042311251. The cubic root of 21360150 is about 277.4606713195.

Adding to 21360150 its reverse (5106312), we get a palindrome (26466462).

The spelling of 21360150 in words is "twenty-one million, three hundred sixty thousand, one hundred fifty".