20673898 has 32 divisors (see below), whose sum is σ = 36837504. Its totient is φ = 8517312.

The previous prime is 20673893. The next prime is 20673907. The reversal of 20673898 is 89837602.

It is not an unprimeable number, because it can be changed into a prime (20673893) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55240 + ... + 55612.

It is an arithmetic number, because the mean of its divisors is an integer number (1151172).

Almost surely, 2^20673898 is an apocalyptic number.

20673898 is a deficient number, since it is larger than the sum of its proper divisors (16163606).

20673898 is a wasteful number, since it uses less digits than its factorization.

20673898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 526.

The product of its (nonzero) digits is 145152, while the sum is 43.

The square root of 20673898 is about 4546.8558367294. The cubic root of 20673898 is about 274.4568806738.

The spelling of 20673898 in words is "twenty million, six hundred seventy-three thousand, eight hundred ninety-eight".