215882442 has 32 divisors (see below), whose sum is σ = 486907200. Its totient is φ = 70885584.

The previous prime is 215882441. The next prime is 215882449. The reversal of 215882442 is 244288512.

It is a junction number, because it is equal to n+sod(n) for n = 215882397 and 215882406.

It is not an unprimeable number, because it can be changed into a prime (215882441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26217 + ... + 33452.

It is an arithmetic number, because the mean of its divisors is an integer number (15215850).

Almost surely, 2^215882442 is an apocalyptic number.

215882442 is an abundant number, since it is smaller than the sum of its proper divisors (271024758).

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

215882442 is a wasteful number, since it uses less digits than its factorization.

215882442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59747 (or 59741 counting only the distinct ones).

The product of its digits is 40960, while the sum is 36.

The square root of 215882442 is about 14692.9385080044. The cubic root of 215882442 is about 599.8911302468.

The spelling of 215882442 in words is "two hundred fifteen million, eight hundred eighty-two thousand, four hundred forty-two".