20730608 has 20 divisors (see below), whose sum is σ = 40544280. Its totient is φ = 10267584.

The previous prime is 20730607. The next prime is 20730623. The reversal of 20730608 is 80603702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20730607) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4343 + ... + 7766.

It is an arithmetic number, because the mean of its divisors is an integer number (2027214).

Almost surely, 2^20730608 is an apocalyptic number.

It is an amenable number.

20730608 is a deficient number, since it is larger than the sum of its proper divisors (19813672).

20730608 is a wasteful number, since it uses less digits than its factorization.

20730608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12224 (or 12218 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 20730608 is about 4553.0877434989. The cubic root of 20730608 is about 274.7076032658.

The spelling of 20730608 in words is "twenty million, seven hundred thirty thousand, six hundred eight".