215950 has 24 divisors (see below), whose sum is σ = 459792. Its totient is φ = 73920.

The previous prime is 215939. The next prime is 215953. The reversal of 215950 is 59512.

215950 is nontrivially palindromic in base 6.

215950 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

215950 is an esthetic number in base 6, because in such base its adjacent digits differ by 1.

It is an Ulam number.

215950 is an undulating number in base 6.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215953) by changing a digit.

215950 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 42 + ... + 658.

It is an arithmetic number, because the mean of its divisors is an integer number (19158).

2²¹⁵⁹⁵⁰ is an apocalyptic number.

215950 is an abundant number, since it is smaller than the sum of its proper divisors (243842).

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

215950 is a wasteful number, since it uses less digits than its factorization.

215950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 636 (or 631 counting only the distinct ones).

The product of its (nonzero) digits is 450, while the sum is 22.

The square root of 215950 is about 464.7042069962. The cubic root of 215950 is about 59.9953700131.

It can be divided in two parts, 2159 and 50, that added together give a square (2209 = 47²).

The spelling of 215950 in words is "two hundred fifteen thousand, nine hundred fifty".