215043364 has 12 divisors (see below), whose sum is σ = 377394444. Its totient is φ = 107216384.

The previous prime is 215043347. The next prime is 215043383. The reversal of 215043364 is 463340512.

215043364 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 50126400 + 164916964 = 7080^2 + 12842^2 .

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, 74737 + ... + 77560.

It is an arithmetic number, because the mean of its divisors is an integer number (31449537).

Almost surely, 2^215043364 is an apocalyptic number.

It is an amenable number.

215043364 is a deficient number, since it is larger than the sum of its proper divisors (162351080).

215043364 is a wasteful number, since it uses less digits than its factorization.

215043364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152654 (or 152652 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 28.

The square root of 215043364 is about 14664.3569241887. The cubic root of 215043364 is about 599.1129150394.

Adding to 215043364 its reverse (463340512), we get a palindrome (678383876).

The spelling of 215043364 in words is "two hundred fifteen million, forty-three thousand, three hundred sixty-four".