1215322492 has 24 divisors (see below), whose sum is σ = 2180656800. Its totient is φ = 592304640.

The previous prime is 1215322487. The next prime is 1215322499. The reversal of 1215322492 is 2942235121.

It is a super-2 number, since 2×1215322492² = 2954017519122180128, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1215322499) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 226788 + ... + 232084.

It is an arithmetic number, because the mean of its divisors is an integer number (90860700).

Almost surely, 2^1215322492 is an apocalyptic number.

It is an amenable number.

1215322492 is a deficient number, since it is larger than the sum of its proper divisors (965334308).

1215322492 is a wasteful number, since it uses less digits than its factorization.

1215322492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6741 (or 6739 counting only the distinct ones).

The product of its digits is 8640, while the sum is 31.

The square root of 1215322492 is about 34861.4757576325. The cubic root of 1215322492 is about 1067.1623920189.

The spelling of 1215322492 in words is "one billion, two hundred fifteen million, three hundred twenty-two thousand, four hundred ninety-two".