1215515332 has 24 divisors (see below), whose sum is σ = 2205245952. Its totient is φ = 585614400.

The previous prime is 1215515263. The next prime is 1215515369. The reversal of 1215515332 is 2335155121.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 1215515332.

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, 7857 + ... + 49927.

It is an arithmetic number, because the mean of its divisors is an integer number (91885248).

Almost surely, 2^1215515332 is an apocalyptic number.

It is an amenable number.

1215515332 is a deficient number, since it is larger than the sum of its proper divisors (989730620).

1215515332 is a wasteful number, since it uses less digits than its factorization.

1215515332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42339 (or 42337 counting only the distinct ones).

The product of its digits is 4500, while the sum is 28.

The square root of 1215515332 is about 34864.2414516651. The cubic root of 1215515332 is about 1067.2188326518.

The spelling of 1215515332 in words is "one billion, two hundred fifteen million, five hundred fifteen thousand, three hundred thirty-two".