215212032 has 224 divisors, whose sum is σ = 733958400. Its totient is φ = 61046784.

The previous prime is 215212021. The next prime is 215212043. The reversal of 215212032 is 230212512.

It is an interprime number because it is at equal distance from previous prime (215212021) and next prime (215212043).

It is a tau number, because it is divible by the number of its divisors (224).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 215211996 and 215212014.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1548219 + ... + 1548357.

It is an arithmetic number, because the mean of its divisors is an integer number (3276600).

Almost surely, 2^215212032 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 215212032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (366979200).

215212032 is an abundant number, since it is smaller than the sum of its proper divisors (518746368).

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

215212032 is an equidigital number, since it uses as much as digits as its factorization.

215212032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181 (or 151 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 215212032 is about 14670.1067480779. The cubic root of 215212032 is about 599.2695110040.

Adding to 215212032 its reverse (230212512), we get a palindrome (445424544).

The spelling of 215212032 in words is "two hundred fifteen million, two hundred twelve thousand, thirty-two".