215050136 has 64 divisors (see below), whose sum is σ = 490017600. Its totient is φ = 86372352.

The previous prime is 215050117. The next prime is 215050139. The reversal of 215050136 is 631050512.

215050136 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 (215050139) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 377660 + ... + 378228.

It is an arithmetic number, because the mean of its divisors is an integer number (7656525).

Almost surely, 2^215050136 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 215050136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (245008800).

215050136 is an abundant number, since it is smaller than the sum of its proper divisors (274967464).

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

215050136 is a wasteful number, since it uses less digits than its factorization.

215050136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 996 (or 992 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 215050136 is about 14664.5878223699. The cubic root of 215050136 is about 599.1192039261.

The spelling of 215050136 in words is "two hundred fifteen million, fifty thousand, one hundred thirty-six".