21480014 has 8 divisors (see below), whose sum is σ = 32240160. Its totient is φ = 10733296.

The previous prime is 21480007. The next prime is 21480049. The reversal of 21480014 is 41008412.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×21480014² = 922782002880392, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3227 + ... + 7305.

It is an arithmetic number, because the mean of its divisors is an integer number (4030020).

Almost surely, 2^21480014 is an apocalyptic number.

21480014 is a deficient number, since it is larger than the sum of its proper divisors (10760146).

21480014 is a wasteful number, since it uses less digits than its factorization.

21480014 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6714.

The product of its (nonzero) digits is 256, while the sum is 20.

The square root of 21480014 is about 4634.6536008638. The cubic root of 21480014 is about 277.9787002987.

Adding to 21480014 its reverse (41008412), we get a palindrome (62488426).

The spelling of 21480014 in words is "twenty-one million, four hundred eighty thousand, fourteen".