215105536 has 60 divisors (see below), whose sum is σ = 453495280. Its totient is φ = 101744640.

The previous prime is 215105533. The next prime is 215105549. The reversal of 215105536 is 635501512.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (215105533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 310951 + ... + 311641.

Almost surely, 2^215105536 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 215105536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (226747640).

215105536 is an abundant number, since it is smaller than the sum of its proper divisors (238389744).

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

215105536 is an frugal number, since it uses more digits than its factorization.

215105536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 738 (or 712 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 28.

The square root of 215105536 is about 14666.4766048291. The cubic root of 215105536 is about 599.1706467427.

The spelling of 215105536 in words is "two hundred fifteen million, one hundred five thousand, five hundred thirty-six".