20159226 has 32 divisors (see below), whose sum is σ = 44945280. Its totient is φ = 6697728.

The previous prime is 20159203. The next prime is 20159261. The reversal of 20159226 is 62295102.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 20159226.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30835 + ... + 31481.

It is an arithmetic number, because the mean of its divisors is an integer number (1404540).

Almost surely, 2^20159226 is an apocalyptic number.

20159226 is an abundant number, since it is smaller than the sum of its proper divisors (24786054).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20159226 is a wasteful number, since it uses less digits than its factorization.

20159226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1235 (or 1229 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 20159226 is about 4489.9026715509. The cubic root of 20159226 is about 272.1602015464.

The spelling of 20159226 in words is "twenty million, one hundred fifty-nine thousand, two hundred twenty-six".