1215350612 has 24 divisors (see below), whose sum is σ = 2435561856. Its totient is φ = 519823008.

The previous prime is 1215350597. The next prime is 1215350623. The reversal of 1215350612 is 2160535121.

It is a super-2 number, since 2×1215350612² = 2954154220177549088, which contains 22 as substring.

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, 29063 + ... + 57230.

It is an arithmetic number, because the mean of its divisors is an integer number (101481744).

Almost surely, 2^1215350612 is an apocalyptic number.

It is an amenable number.

1215350612 is an abundant number, since it is smaller than the sum of its proper divisors (1220211244).

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

1215350612 is a wasteful number, since it uses less digits than its factorization.

1215350612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86807 (or 86805 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 1215350612 is about 34861.8790658220. The cubic root of 1215350612 is about 1067.1706225846.

Adding to 1215350612 its reverse (2160535121), we get a palindrome (3375885733).

The spelling of 1215350612 in words is "one billion, two hundred fifteen million, three hundred fifty thousand, six hundred twelve".