1226155528 has 32 divisors (see below), whose sum is σ = 2477343960. Its totient is φ = 565585920.

The previous prime is 1226155499. The next prime is 1226155529. The reversal of 1226155528 is 8255516221.

It can be written as a sum of positive squares in 4 ways, for example, as 1043419204 + 182736324 = 32302^2 + 13518^2 .

It is not an unprimeable number, because it can be changed into a prime (1226155529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 314326 + ... + 318202.

Almost surely, 2^1226155528 is an apocalyptic number.

It is an amenable number.

1226155528 is an abundant number, since it is smaller than the sum of its proper divisors (1251188432).

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

1226155528 is a wasteful number, since it uses less digits than its factorization.

1226155528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6937 (or 6933 counting only the distinct ones).

The product of its digits is 48000, while the sum is 37.

The square root of 1226155528 is about 35016.5036518497. The cubic root of 1226155528 is about 1070.3238103437.

The spelling of 1226155528 in words is "one billion, two hundred twenty-six million, one hundred fifty-five thousand, five hundred twenty-eight".