1215882 has 24 divisors (see below), whose sum is σ = 2720640. Its totient is φ = 392040.

The previous prime is 1215881. The next prime is 1215899. The reversal of 1215882 is 2885121.

It is not an unprimeable number, because it can be changed into a prime (1215881) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 532 + ... + 1647.

It is an arithmetic number, because the mean of its divisors is an integer number (113360).

2^1215882 is an apocalyptic number.

1215882 is an abundant number, since it is smaller than the sum of its proper divisors (1504758).

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

1215882 is a wasteful number, since it uses less digits than its factorization.

1215882 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2218 (or 2215 counting only the distinct ones).

The product of its digits is 1280, while the sum is 27.

The square root of 1215882 is about 1102.6703949957. The cubic root of 1215882 is about 106.7326133000.

The spelling of 1215882 in words is "one million, two hundred fifteen thousand, eight hundred eighty-two".