1215267492 has 12 divisors (see below), whose sum is σ = 2835624176. Its totient is φ = 405089160.

The previous prime is 1215267467. The next prime is 1215267497. The reversal of 1215267492 is 2947625121.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×1215267492² = 2953750154223940128, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1215267492.

It is not an unprimeable number, because it can be changed into a prime (1215267497) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 50636134 + ... + 50636157.

Almost surely, 2^1215267492 is an apocalyptic number.

1215267492 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1215267492 is an abundant number, since it is smaller than the sum of its proper divisors (1620356684).

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

1215267492 is a wasteful number, since it uses less digits than its factorization.

1215267492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101272298 (or 101272296 counting only the distinct ones).

The product of its digits is 60480, while the sum is 39.

The square root of 1215267492 is about 34860.6869123372. The cubic root of 1215267492 is about 1067.1462934614.

The spelling of 1215267492 in words is "one billion, two hundred fifteen million, two hundred sixty-seven thousand, four hundred ninety-two".