215422432 has 48 divisors (see below), whose sum is σ = 443342592. Its totient is φ = 102936960.

The previous prime is 215422421. The next prime is 215422447. The reversal of 215422432 is 234224512.

215422432 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 215422397 and 215422406.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63007 + ... + 66337.

It is an arithmetic number, because the mean of its divisors is an integer number (9236304).

Almost surely, 2^215422432 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 215422432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (221671296).

215422432 is an abundant number, since it is smaller than the sum of its proper divisors (227920160).

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

215422432 is a wasteful number, since it uses less digits than its factorization.

215422432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3431 (or 3423 counting only the distinct ones).

The product of its digits is 3840, while the sum is 25.

The square root of 215422432 is about 14677.2760415548. The cubic root of 215422432 is about 599.4647374468.

Adding to 215422432 its reverse (234224512), we get a palindrome (449646944).

The spelling of 215422432 in words is "two hundred fifteen million, four hundred twenty-two thousand, four hundred thirty-two".