21060814 has 8 divisors (see below), whose sum is σ = 31695048. Its totient is φ = 10495800.

The previous prime is 21060763. The next prime is 21060829. The reversal of 21060814 is 41806012.

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

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, 16537 + ... + 17764.

It is an arithmetic number, because the mean of its divisors is an integer number (3961881).

Almost surely, 2^21060814 is an apocalyptic number.

21060814 is a deficient number, since it is larger than the sum of its proper divisors (10634234).

21060814 is a wasteful number, since it uses less digits than its factorization.

21060814 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34610.

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 21060814 is about 4589.2062494510. The cubic root of 21060814 is about 276.1584803611.

Adding to 21060814 its reverse (41806012), we get a palindrome (62866826).

The spelling of 21060814 in words is "twenty-one million, sixty thousand, eight hundred fourteen".