21450114 has 24 divisors (see below), whose sum is σ = 53114880. Its totient is φ = 6128568.

The previous prime is 21450113. The next prime is 21450119. The reversal of 21450114 is 41105412.

It is a super-2 number, since 2×21450114² = 920214781225992, which contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (21450113) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 84994 + ... + 85245.

It is an arithmetic number, because the mean of its divisors is an integer number (2213120).

Almost surely, 2^21450114 is an apocalyptic number.

21450114 is an abundant number, since it is smaller than the sum of its proper divisors (31664766).

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

21450114 is a wasteful number, since it uses less digits than its factorization.

21450114 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170254 (or 170251 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 21450114 is about 4631.4267780026. The cubic root of 21450114 is about 277.8496590627.

Adding to 21450114 its reverse (41105412), we get a palindrome (62555526).

The spelling of 21450114 in words is "twenty-one million, four hundred fifty thousand, one hundred fourteen".