1215972532 has 48 divisors (see below), whose sum is σ = 2324464128. Its totient is φ = 554355200.

The previous prime is 1215972517. The next prime is 1215972559. The reversal of 1215972532 is 2352795121.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1215972491 and 1215972500.

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 15 ways as a sum of consecutive naturals, for example, 320913 + ... + 324679.

It is an arithmetic number, because the mean of its divisors is an integer number (48426336).

Almost surely, 2^1215972532 is an apocalyptic number.

It is an amenable number.

1215972532 is a deficient number, since it is larger than the sum of its proper divisors (1108491596).

1215972532 is a wasteful number, since it uses less digits than its factorization.

1215972532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3936 (or 3934 counting only the distinct ones).

The product of its digits is 37800, while the sum is 37.

The square root of 1215972532 is about 34870.7976966401. The cubic root of 1215972532 is about 1067.3526226238.

The spelling of 1215972532 in words is "one billion, two hundred fifteen million, nine hundred seventy-two thousand, five hundred thirty-two".