21486514 has 8 divisors (see below), whose sum is σ = 36834048. Its totient is φ = 9208500.

The previous prime is 21486467. The next prime is 21486523. The reversal of 21486514 is 41568412.

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

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, 767362 + ... + 767389.

It is an arithmetic number, because the mean of its divisors is an integer number (4604256).

Almost surely, 2^21486514 is an apocalyptic number.

21486514 is a deficient number, since it is larger than the sum of its proper divisors (15347534).

21486514 is a wasteful number, since it uses less digits than its factorization.

21486514 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1534760.

The product of its digits is 7680, while the sum is 31.

The square root of 21486514 is about 4635.3547868529. The cubic root of 21486514 is about 278.0067368931.

The spelling of 21486514 in words is "twenty-one million, four hundred eighty-six thousand, five hundred fourteen".