1226540764 has 24 divisors (see below), whose sum is σ = 2194049088. Its totient is φ = 599692800.

The previous prime is 1226540753. The next prime is 1226540779. The reversal of 1226540764 is 4670456221.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 289864 + ... + 294064.

It is an arithmetic number, because the mean of its divisors is an integer number (91418712).

Almost surely, 2^1226540764 is an apocalyptic number.

It is an amenable number.

1226540764 is a deficient number, since it is larger than the sum of its proper divisors (967508324).

1226540764 is a wasteful number, since it uses less digits than its factorization.

1226540764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5805 (or 5803 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 37.

The square root of 1226540764 is about 35022.0039974871. The cubic root of 1226540764 is about 1070.4358907662.

Adding to 1226540764 its reverse (4670456221), we get a palindrome (5896996985).

The spelling of 1226540764 in words is "one billion, two hundred twenty-six million, five hundred forty thousand, seven hundred sixty-four".