215430044 has 12 divisors (see below), whose sum is σ = 377143368. Its totient is φ = 107674800.

The previous prime is 215430023. The next prime is 215430053. The reversal of 215430044 is 440034512.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4259 + ... + 21189.

It is an arithmetic number, because the mean of its divisors is an integer number (31428614).

Almost surely, 2^215430044 is an apocalyptic number.

It is an amenable number.

215430044 is a deficient number, since it is larger than the sum of its proper divisors (161713324).

215430044 is a wasteful number, since it uses less digits than its factorization.

215430044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20116 (or 20114 counting only the distinct ones).

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

The square root of 215430044 is about 14677.5353516863. The cubic root of 215430044 is about 599.4717981040.

Adding to 215430044 its reverse (440034512), we get a palindrome (655464556).

The spelling of 215430044 in words is "two hundred fifteen million, four hundred thirty thousand, forty-four".