215413146 has 72 divisors (see below), whose sum is σ = 532134720. Its totient is φ = 62775648.

The previous prime is 215413129. The next prime is 215413157. The reversal of 215413146 is 641314512.

It is a happy number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 55935 + ... + 59661.

It is an arithmetic number, because the mean of its divisors is an integer number (7390760).

Almost surely, 2^215413146 is an apocalyptic number.

215413146 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 215413146, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (266067360).

215413146 is an abundant number, since it is smaller than the sum of its proper divisors (316721574).

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

215413146 is a wasteful number, since it uses less digits than its factorization.

215413146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3780 (or 3764 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 215413146 is about 14676.9596987932. The cubic root of 215413146 is about 599.4561238135.

Adding to 215413146 its reverse (641314512), we get a palindrome (856727658).

The spelling of 215413146 in words is "two hundred fifteen million, four hundred thirteen thousand, one hundred forty-six".