21114324 has 96 divisors (see below), whose sum is σ = 68275200. Its totient is φ = 5482080.

The previous prime is 21114319. The next prime is 21114337. The reversal of 21114324 is 42341112.

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

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 21114297 and 21114306.

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 7047 + ... + 9585.

It is an arithmetic number, because the mean of its divisors is an integer number (711200).

Almost surely, 2^21114324 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21114324, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34137600).

21114324 is an abundant number, since it is smaller than the sum of its proper divisors (47160876).

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

21114324 is a wasteful number, since it uses less digits than its factorization.

21114324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2570 (or 2562 counting only the distinct ones).

The product of its digits is 192, while the sum is 18.

The square root of 21114324 is about 4595.0325352493. The cubic root of 21114324 is about 276.3921646319.

Adding to 21114324 its reverse (42341112), we get a palindrome (63455436).

It can be divided in two parts, 211 and 14324, that added together give a triangular number (14535 = T₁₇₀).

The spelling of 21114324 in words is "twenty-one million, one hundred fourteen thousand, three hundred twenty-four".