215191152 has 120 divisors (see below), whose sum is σ = 666342768. Its totient is φ = 64281600.

The previous prime is 215191147. The next prime is 215191153. The reversal of 215191152 is 251191512.

215191152 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215191153) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 114702 + ... + 116562.

Almost surely, 2^215191152 is an apocalyptic number.

215191152 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 215191152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (333171384).

215191152 is an abundant number, since it is smaller than the sum of its proper divisors (451151616).

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

215191152 is a wasteful number, since it uses less digits than its factorization.

215191152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1959 (or 1950 counting only the distinct ones).

The product of its digits is 900, while the sum is 27.

The square root of 215191152 is about 14669.3950795525. The cubic root of 215191152 is about 599.2501298818.

The spelling of 215191152 in words is "two hundred fifteen million, one hundred ninety-one thousand, one hundred fifty-two".