215212248 has 256 divisors, whose sum is σ = 684288000. Its totient is φ = 62318592.

The previous prime is 215212223. The next prime is 215212267. The reversal of 215212248 is 842212512.

215212248 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4578961 + ... + 4579007.

It is an arithmetic number, because the mean of its divisors is an integer number (2673000).

Almost surely, 2^215212248 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 215212248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (342144000).

215212248 is an abundant number, since it is smaller than the sum of its proper divisors (469075752).

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

215212248 is a wasteful number, since it uses less digits than its factorization.

215212248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151 (or 141 counting only the distinct ones).

The product of its digits is 2560, while the sum is 27.

The square root of 215212248 is about 14670.1141099856. The cubic root of 215212248 is about 599.2697114918.

It can be divided in two parts, 2152 and 12248, that added together give a square (14400 = 120²).

The spelling of 215212248 in words is "two hundred fifteen million, two hundred twelve thousand, two hundred forty-eight".