215952030 has 96 divisors (see below), whose sum is σ = 649958400. Its totient is φ = 48724416.

The previous prime is 215952007. The next prime is 215952047. The reversal of 215952030 is 30259512.

215952030 is a `hidden beast` number, since 21 + 595 + 20 + 30 = 666.

It is a super-2 number, since 2×215952030² = 93270558522241800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 215951985 and 215952003.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 47601 + ... + 51939.

It is an arithmetic number, because the mean of its divisors is an integer number (6770400).

Almost surely, 2^215952030 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 215952030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (324979200).

215952030 is an abundant number, since it is smaller than the sum of its proper divisors (434006370).

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

215952030 is a wasteful number, since it uses less digits than its factorization.

215952030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4438 (or 4435 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 27.

The square root of 215952030 is about 14695.3063935394. The cubic root of 215952030 is about 599.9555800449.

The spelling of 215952030 in words is "two hundred fifteen million, nine hundred fifty-two thousand, thirty".