20582226 has 24 divisors (see below), whose sum is σ = 50965824. Its totient is φ = 5880600.

The previous prime is 20582213. The next prime is 20582227. The reversal of 20582226 is 62228502.

It is a self number, because there is not a number n which added to its sum of digits gives 20582226.

It is not an unprimeable number, because it can be changed into a prime (20582227) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 81550 + ... + 81801.

It is an arithmetic number, because the mean of its divisors is an integer number (2123576).

Almost surely, 2^20582226 is an apocalyptic number.

20582226 is an abundant number, since it is smaller than the sum of its proper divisors (30383598).

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

20582226 is a wasteful number, since it uses less digits than its factorization.

20582226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163366 (or 163363 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 20582226 is about 4536.7638245780. The cubic root of 20582226 is about 274.0506149058.

The spelling of 20582226 in words is "twenty million, five hundred eighty-two thousand, two hundred twenty-six".