215152650 has 72 divisors (see below), whose sum is σ = 591539520. Its totient is φ = 56034720.

The previous prime is 215152589. The next prime is 215152667. The reversal of 215152650 is 56251512.

215152650 is a `hidden beast` number, since 2 + 1 + 5 + 1 + 5 + 2 + 650 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 13791 + ... + 24909.

Almost surely, 2^215152650 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 215152650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (295769760).

215152650 is an abundant number, since it is smaller than the sum of its proper divisors (376386870).

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

215152650 is a wasteful number, since it uses less digits than its factorization.

215152650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11180 (or 11172 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 27.

The square root of 215152650 is about 14668.0826967944. The cubic root of 215152650 is about 599.2143884732.

The spelling of 215152650 in words is "two hundred fifteen million, one hundred fifty-two thousand, six hundred fifty".