215443430 has 32 divisors (see below), whose sum is σ = 393590016. Its totient is φ = 84900064.

The previous prime is 215443411. The next prime is 215443433. The reversal of 215443430 is 34344512.

215443430 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 215443430.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215443433) 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, 242447 + ... + 243333.

It is an arithmetic number, because the mean of its divisors is an integer number (12299688).

Almost surely, 2^215443430 is an apocalyptic number.

215443430 is a deficient number, since it is larger than the sum of its proper divisors (178146586).

215443430 is a wasteful number, since it uses less digits than its factorization.

215443430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1228.

The product of its (nonzero) digits is 5760, while the sum is 26.

The square root of 215443430 is about 14677.9913475925. The cubic root of 215443430 is about 599.4842141427.

Adding to 215443430 its reverse (34344512), we get a palindrome (249787942).

The spelling of 215443430 in words is "two hundred fifteen million, four hundred forty-three thousand, four hundred thirty".