21246214 has 32 divisors (see below), whose sum is σ = 36596736. Its totient is φ = 9162720.

The previous prime is 21246193. The next prime is 21246221. The reversal of 21246214 is 41264212.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34699 + ... + 35305.

It is an arithmetic number, because the mean of its divisors is an integer number (1143648).

Almost surely, 2^21246214 is an apocalyptic number.

21246214 is a deficient number, since it is larger than the sum of its proper divisors (15350522).

21246214 is a wasteful number, since it uses less digits than its factorization.

21246214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 700.

The product of its digits is 768, while the sum is 22.

The square root of 21246214 is about 4609.3615609974. The cubic root of 21246214 is about 276.9664623343.

It can be divided in two parts, 2124 and 6214, that added together give a palindrome (8338).

The spelling of 21246214 in words is "twenty-one million, two hundred forty-six thousand, two hundred fourteen".