215213152 has 96 divisors (see below), whose sum is σ = 556174080. Its totient is φ = 79418880.

The previous prime is 215213137. The next prime is 215213153. The reversal of 215213152 is 251312512.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215213153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44518 + ... + 49114.

It is an arithmetic number, because the mean of its divisors is an integer number (5793480).

Almost surely, 2^215213152 is an apocalyptic number.

215213152 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 215213152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (278087040).

215213152 is an abundant number, since it is smaller than the sum of its proper divisors (340960928).

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

215213152 is a wasteful number, since it uses less digits than its factorization.

215213152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4644 (or 4636 counting only the distinct ones).

The product of its digits is 600, while the sum is 22.

The square root of 215213152 is about 14670.1449208929. The cubic root of 215213152 is about 599.2705505690.

Adding to 215213152 its reverse (251312512), we get a palindrome (466525664).

The spelling of 215213152 in words is "two hundred fifteen million, two hundred thirteen thousand, one hundred fifty-two".