1226581284 has 24 divisors (see below), whose sum is σ = 2863557760. Its totient is φ = 408641184.

The previous prime is 1226581277. The next prime is 1226581333. The reversal of 1226581284 is 4821856221.

It is a happy number.

It is an unprimeable number.

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, 3244 + ... + 49635.

Almost surely, 2^1226581284 is an apocalyptic number.

It is an amenable number.

1226581284 is an abundant number, since it is smaller than the sum of its proper divisors (1636976476).

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

1226581284 is a wasteful number, since it uses less digits than its factorization.

1226581284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54819 (or 54817 counting only the distinct ones).

The product of its digits is 61440, while the sum is 39.

The square root of 1226581284 is about 35022.5824861617. The cubic root of 1226581284 is about 1070.4476782762.

The spelling of 1226581284 in words is "one billion, two hundred twenty-six million, five hundred eighty-one thousand, two hundred eighty-four".