20477226 has 64 divisors (see below), whose sum is σ = 51609600. Its totient is φ = 5261760.

The previous prime is 20477203. The next prime is 20477227. The reversal of 20477226 is 62277402.

It is a super-3 number, since 3×20477226³ (a number of 23 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20477193 and 20477202.

It is not an unprimeable number, because it can be changed into a prime (20477227) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 58500 + ... + 58848.

It is an arithmetic number, because the mean of its divisors is an integer number (806400).

Almost surely, 2^20477226 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20477226, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25804800).

20477226 is an abundant number, since it is smaller than the sum of its proper divisors (31132374).

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

20477226 is a wasteful number, since it uses less digits than its factorization.

20477226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 499.

The product of its (nonzero) digits is 9408, while the sum is 30.

The square root of 20477226 is about 4525.1769026194. The cubic root of 20477226 is about 273.5837981155.

The spelling of 20477226 in words is "twenty million, four hundred seventy-seven thousand, two hundred twenty-six".