1020641226 has 32 divisors (see below), whose sum is σ = 2287044288. Its totient is φ = 300925440.

The previous prime is 1020641213. The next prime is 1020641227. The reversal of 1020641226 is 6221460201.

It is a junction number, because it is equal to n+sod(n) for n = 1020641196 and 1020641205.

It is not an unprimeable number, because it can be changed into a prime (1020641227) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 206535 + ... + 211418.

It is an arithmetic number, because the mean of its divisors is an integer number (71470134).

Almost surely, 2^1020641226 is an apocalyptic number.

1020641226 is an abundant number, since it is smaller than the sum of its proper divisors (1266403062).

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

1020641226 is a wasteful number, since it uses less digits than its factorization.

1020641226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 418006.

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 1020641226 is about 31947.4760505427. The cubic root of 1020641226 is about 1006.8336041488.

It can be divided in two parts, 1020 and 641226, that added together give a palindrome (642246).

The spelling of 1020641226 in words is "one billion, twenty million, six hundred forty-one thousand, two hundred twenty-six".