21485014 has 4 divisors (see below), whose sum is σ = 32227524. Its totient is φ = 10742506.

The previous prime is 21485011. The next prime is 21485021. The reversal of 21485014 is 41058412.

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

It is a self number, because there is not a number n which added to its sum of digits gives 21485014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21485011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5371252 + ... + 5371255.

It is an arithmetic number, because the mean of its divisors is an integer number (8056881).

Almost surely, 2^21485014 is an apocalyptic number.

21485014 is a deficient number, since it is larger than the sum of its proper divisors (10742510).

21485014 is a wasteful number, since it uses less digits than its factorization.

21485014 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10742509.

The product of its (nonzero) digits is 1280, while the sum is 25.

The square root of 21485014 is about 4635.1929841162. The cubic root of 21485014 is about 278.0002674117. Note that the first 3 decimals are identical.

The spelling of 21485014 in words is "twenty-one million, four hundred eighty-five thousand, fourteen".