1262226020 has 36 divisors (see below), whose sum is σ = 2913557052. Its totient is φ = 458990400.

The previous prime is 1262225981. The next prime is 1262226061. The reversal of 1262226020 is 206222621.

It can be written as a sum of positive squares in 2 ways, for example, as 664814656 + 597411364 = 25784^2 + 24442^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 258371 + ... + 263210.

Almost surely, 2^1262226020 is an apocalyptic number.

1262226020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1262226020 is an abundant number, since it is smaller than the sum of its proper divisors (1651331032).

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

1262226020 is a wasteful number, since it uses less digits than its factorization.

1262226020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 521612 (or 521599 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 1262226020 is about 35527.8203665803. The cubic root of 1262226020 is about 1080.7179782331.

Adding to 1262226020 its reverse (206222621), we get a palindrome (1468448641).

The spelling of 1262226020 in words is "one billion, two hundred sixty-two million, two hundred twenty-six thousand, twenty".