20830718 has 4 divisors (see below), whose sum is σ = 31246080. Its totient is φ = 10415358.

The previous prime is 20830681. The next prime is 20830721. The reversal of 20830718 is 81703802.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5207678 + ... + 5207681.

It is an arithmetic number, because the mean of its divisors is an integer number (7811520).

Almost surely, 2^20830718 is an apocalyptic number.

20830718 is a deficient number, since it is larger than the sum of its proper divisors (10415362).

20830718 is a wasteful number, since it uses less digits than its factorization.

20830718 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10415361.

The product of its (nonzero) digits is 2688, while the sum is 29.

The square root of 20830718 is about 4564.0681414720. The cubic root of 20830718 is about 275.1490894055.

The spelling of 20830718 in words is "twenty million, eight hundred thirty thousand, seven hundred eighteen".