215013340 has 12 divisors (see below), whose sum is σ = 451528056. Its totient is φ = 86005328.

The previous prime is 215013311. The next prime is 215013341. The reversal of 215013340 is 43310512.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215013341) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5375314 + ... + 5375353.

It is an arithmetic number, because the mean of its divisors is an integer number (37627338).

Almost surely, 2^215013340 is an apocalyptic number.

215013340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

215013340 is an abundant number, since it is smaller than the sum of its proper divisors (236514716).

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

215013340 is a wasteful number, since it uses less digits than its factorization.

215013340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10750676 (or 10750674 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 215013340 is about 14663.3331817837. Note that the first 3 decimals coincide. The cubic root of 215013340 is about 599.0850313558.

Adding to 215013340 its reverse (43310512), we get a palindrome (258323852).

It can be divided in two parts, 21 and 5013340, that added together give a triangular number (5013361 = T₃₁₆₆).

The spelling of 215013340 in words is "two hundred fifteen million, thirteen thousand, three hundred forty".