20928698 has 8 divisors (see below), whose sum is σ = 35877792. Its totient is φ = 8969436.

The previous prime is 20928679. The next prime is 20928703. The reversal of 20928698 is 89682902.

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, 747440 + ... + 747467.

It is an arithmetic number, because the mean of its divisors is an integer number (4484724).

Almost surely, 2^20928698 is an apocalyptic number.

20928698 is a deficient number, since it is larger than the sum of its proper divisors (14949094).

20928698 is a wasteful number, since it uses less digits than its factorization.

20928698 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1494916.

The product of its (nonzero) digits is 124416, while the sum is 44.

The square root of 20928698 is about 4574.7893940596. The cubic root of 20928698 is about 275.5798146663.

The spelling of 20928698 in words is "twenty million, nine hundred twenty-eight thousand, six hundred ninety-eight".