20783226 has 16 divisors (see below), whose sum is σ = 43754400. Its totient is φ = 6563088.

The previous prime is 20783221. The next prime is 20783239. The reversal of 20783226 is 62238702.

It is a junction number, because it is equal to n+sod(n) for n = 20783193 and 20783202.

It is not an unprimeable number, because it can be changed into a prime (20783221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 91041 + ... + 91268.

It is an arithmetic number, because the mean of its divisors is an integer number (2734650).

Almost surely, 2^20783226 is an apocalyptic number.

20783226 is an abundant number, since it is smaller than the sum of its proper divisors (22971174).

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

20783226 is a wasteful number, since it uses less digits than its factorization.

20783226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182333.

The product of its (nonzero) digits is 8064, while the sum is 30.

The square root of 20783226 is about 4558.8623580889. The cubic root of 20783226 is about 274.9398259525.

The spelling of 20783226 in words is "twenty million, seven hundred eighty-three thousand, two hundred twenty-six".