20926018 has 8 divisors (see below), whose sum is σ = 31667148. Its totient is φ = 10370304.

The previous prime is 20926013. The next prime is 20926019. The reversal of 20926018 is 81062902.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 20912329 + 13689 = 4573^2 + 117^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (20926013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46071 + ... + 46522.

Almost surely, 2^20926018 is an apocalyptic number.

20926018 is a deficient number, since it is larger than the sum of its proper divisors (10741130).

20926018 is a wasteful number, since it uses less digits than its factorization.

20926018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92708.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 20926018 is about 4574.4964750232. The cubic root of 20926018 is about 275.5680511469.

The spelling of 20926018 in words is "twenty million, nine hundred twenty-six thousand, eighteen".