21360130 has 48 divisors (see below), whose sum is σ = 42900480. Its totient is φ = 7650720.

The previous prime is 21360127. The next prime is 21360149. The reversal of 21360130 is 3106312.

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 23 ways as a sum of consecutive naturals, for example, 153601 + ... + 153739.

It is an arithmetic number, because the mean of its divisors is an integer number (893760).

Almost surely, 2^21360130 is an apocalyptic number.

21360130 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

21360130 is a wasteful number, since it uses less digits than its factorization.

21360130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 295 (or 284 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 21360130 is about 4621.7020674206. The cubic root of 21360130 is about 277.4605847219.

Adding to 21360130 its reverse (3106312), we get a palindrome (24466442).

The spelling of 21360130 in words is "twenty-one million, three hundred sixty thousand, one hundred thirty".