21430014 has 32 divisors (see below), whose sum is σ = 44928000. Its totient is φ = 6805344.

The previous prime is 21430007. The next prime is 21430033. The reversal of 21430014 is 41003412.

It is a junction number, because it is equal to n+sod(n) for n = 21429975 and 21430002.

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, 12967 + ... + 14525.

It is an arithmetic number, because the mean of its divisors is an integer number (1404000).

Almost surely, 2^21430014 is an apocalyptic number.

21430014 is an abundant number, since it is smaller than the sum of its proper divisors (23497986).

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

21430014 is a wasteful number, since it uses less digits than its factorization.

21430014 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1672.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 21430014 is about 4629.2563117633. The cubic root of 21430014 is about 277.7628448624.

Adding to 21430014 its reverse (41003412), we get a palindrome (62433426).

The spelling of 21430014 in words is "twenty-one million, four hundred thirty thousand, fourteen".