215044430 has 24 divisors (see below), whose sum is σ = 391067352. Its totient is φ = 85140624.

The previous prime is 215044421. The next prime is 215044447. The reversal of 215044430 is 34440512.

It is a junction number, because it is equal to n+sod(n) for n = 215044396 and 215044405.

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 105077 + ... + 107103.

It is an arithmetic number, because the mean of its divisors is an integer number (16294473).

Almost surely, 2^215044430 is an apocalyptic number.

215044430 is a deficient number, since it is larger than the sum of its proper divisors (176022922).

215044430 is a wasteful number, since it uses less digits than its factorization.

215044430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2240 (or 2137 counting only the distinct ones).

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

The square root of 215044430 is about 14664.3932707767. The cubic root of 215044430 is about 599.1139049999.

Adding to 215044430 its reverse (34440512), we get a palindrome (249484942).

The spelling of 215044430 in words is "two hundred fifteen million, forty-four thousand, four hundred thirty".