1020226636 has 36 divisors (see below), whose sum is σ = 2109069144. Its totient is φ = 428064000.

The previous prime is 1020226577. The next prime is 1020226637. The reversal of 1020226636 is 6366220201.

It is a happy number.

It is a Smith number, since the sum of its digits (28) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (1020226637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 61165 + ... + 76036.

It is an arithmetic number, because the mean of its divisors is an integer number (58585254).

Almost surely, 2^1020226636 is an apocalyptic number.

It is an amenable number.

1020226636 is an abundant number, since it is smaller than the sum of its proper divisors (1088842508).

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

1020226636 is a wasteful number, since it uses less digits than its factorization.

1020226636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137242 (or 137227 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 1020226636 is about 31940.9867724840. The cubic root of 1020226636 is about 1006.6972585960.

Adding to 1020226636 its reverse (6366220201), we get a palindrome (7386446837).

The spelling of 1020226636 in words is "one billion, twenty million, two hundred twenty-six thousand, six hundred thirty-six".