215316464 has 40 divisors (see below), whose sum is σ = 456266928. Its totient is φ = 97620480.

The previous prime is 215316463. The next prime is 215316467. The reversal of 215316464 is 464613512.

215316464 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×215316464² = 92722359338926592, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 215316464.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215316463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79094 + ... + 81770.

Almost surely, 2^215316464 is an apocalyptic number.

It is an amenable number.

215316464 is an abundant number, since it is smaller than the sum of its proper divisors (240950464).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

215316464 is a wasteful number, since it uses less digits than its factorization.

215316464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3153 (or 3147 counting only the distinct ones).

The product of its digits is 17280, while the sum is 32.

The square root of 215316464 is about 14673.6656633576. The cubic root of 215316464 is about 599.3664275083.

Adding to 215316464 its reverse (464613512), we get a palindrome (679929976).

The spelling of 215316464 in words is "two hundred fifteen million, three hundred sixteen thousand, four hundred sixty-four".