21114030 has 64 divisors (see below), whose sum is σ = 59927040. Its totient is φ = 4658304.

The previous prime is 21114019. The next prime is 21114031. The reversal of 21114030 is 3041112.

21114030 = 2296² + 2297² + ... + 2299².

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 21113997 and 21114015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21114031) 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 31 ways as a sum of consecutive naturals, for example, 4357 + ... + 7823.

It is an arithmetic number, because the mean of its divisors is an integer number (936360).

Almost surely, 2^21114030 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21114030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29963520).

21114030 is an abundant number, since it is smaller than the sum of its proper divisors (38813010).

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

21114030 is a wasteful number, since it uses less digits than its factorization.

21114030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3513.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 21114030 is about 4595.0005440696. Note that the first 3 decimals coincide. The cubic root of 21114030 is about 276.3908817797.

Adding to 21114030 its reverse (3041112), we get a palindrome (24155142).

It can be divided in two parts, 211 and 14030, that added together give a palindrome (14241).

The spelling of 21114030 in words is "twenty-one million, one hundred fourteen thousand, thirty".