21354162 has 16 divisors (see below), whose sum is σ = 43149792. Its totient is φ = 7044480.

The previous prime is 21354139. The next prime is 21354167. The reversal of 21354162 is 26145312.

It is not an unprimeable number, because it can be changed into a prime (21354167) 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 7 ways as a sum of consecutive naturals, for example, 17764 + ... + 18927.

It is an arithmetic number, because the mean of its divisors is an integer number (2696862).

Almost surely, 2^21354162 is an apocalyptic number.

21354162 is an abundant number, since it is smaller than the sum of its proper divisors (21795630).

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

21354162 is a wasteful number, since it uses less digits than its factorization.

21354162 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36793.

The product of its digits is 1440, while the sum is 24.

The square root of 21354162 is about 4621.0563727356. The cubic root of 21354162 is about 277.4347415738.

Adding to 21354162 its reverse (26145312), we get a palindrome (47499474).

The spelling of 21354162 in words is "twenty-one million, three hundred fifty-four thousand, one hundred sixty-two".