1215226064 has 40 divisors (see below), whose sum is σ = 2540691552. Its totient is φ = 559751040.

The previous prime is 1215226049. The next prime is 1215226081. The reversal of 1215226064 is 4606225121.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 103199 + ... + 114369.

Almost surely, 2^1215226064 is an apocalyptic number.

It is an amenable number.

1215226064 is an abundant number, since it is smaller than the sum of its proper divisors (1325465488).

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

1215226064 is a wasteful number, since it uses less digits than its factorization.

1215226064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11715 (or 11709 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 1215226064 is about 34860.0927135887. The cubic root of 1215226064 is about 1067.1341671218.

The spelling of 1215226064 in words is "one billion, two hundred fifteen million, two hundred twenty-six thousand, sixty-four".