215340044 has 24 divisors (see below), whose sum is σ = 387795408. Its totient is φ = 104569920.

The previous prime is 215340031. The next prime is 215340067. The reversal of 215340044 is 440043512.

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, 27674 + ... + 34590.

It is an arithmetic number, because the mean of its divisors is an integer number (16158142).

Almost surely, 2^215340044 is an apocalyptic number.

It is an amenable number.

215340044 is a deficient number, since it is larger than the sum of its proper divisors (172455364).

215340044 is a wasteful number, since it uses less digits than its factorization.

215340044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7145 (or 7143 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 215340044 is about 14674.4691215730. The cubic root of 215340044 is about 599.3883062261.

Adding to 215340044 its reverse (440043512), we get a palindrome (655383556).

The spelling of 215340044 in words is "two hundred fifteen million, three hundred forty thousand, forty-four".