20673718 has 16 divisors (see below), whose sum is σ = 33964560. Its totient is φ = 9379296.

The previous prime is 20673701. The next prime is 20673769. The reversal of 20673718 is 81737602.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5205 + ... + 8272.

It is an arithmetic number, because the mean of its divisors is an integer number (2122785).

Almost surely, 2^20673718 is an apocalyptic number.

20673718 is a deficient number, since it is larger than the sum of its proper divisors (13290842).

20673718 is a wasteful number, since it uses less digits than its factorization.

20673718 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13551.

The product of its (nonzero) digits is 14112, while the sum is 34.

The square root of 20673718 is about 4546.8360427884. The cubic root of 20673718 is about 274.4560841399.

The spelling of 20673718 in words is "twenty million, six hundred seventy-three thousand, seven hundred eighteen".