21468134 has 4 divisors (see below), whose sum is σ = 32202204. Its totient is φ = 10734066.

The previous prime is 21468121. The next prime is 21468163. The reversal of 21468134 is 43186412.

It is a semiprime because it is the product of two primes.

It is a plaindrome in base 11.

It is a zygodrome in base 11.

It is a junction number, because it is equal to n+sod(n) for n = 21468097 and 21468106.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5367032 + ... + 5367035.

It is an arithmetic number, because the mean of its divisors is an integer number (8050551).

Almost surely, 2^21468134 is an apocalyptic number.

21468134 is a deficient number, since it is larger than the sum of its proper divisors (10734070).

21468134 is a wasteful number, since it uses less digits than its factorization.

21468134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10734069.

The product of its digits is 4608, while the sum is 29.

The square root of 21468134 is about 4633.3717744209. The cubic root of 21468134 is about 277.9274434114.

The spelling of 21468134 in words is "twenty-one million, four hundred sixty-eight thousand, one hundred thirty-four".