215261060 has 48 divisors (see below), whose sum is σ = 519851136. Its totient is φ = 73343232.

The previous prime is 215261003. The next prime is 215261077. The reversal of 215261060 is 60162512.

215261060 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18104 + ... + 27536.

It is an arithmetic number, because the mean of its divisors is an integer number (10830232).

Almost surely, 2^215261060 is an apocalyptic number.

215261060 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 215261060, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (259925568).

215261060 is an abundant number, since it is smaller than the sum of its proper divisors (304590076).

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

215261060 is a wasteful number, since it uses less digits than its factorization.

215261060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9612 (or 9610 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 215261060 is about 14671.7776700712. Note that the first 3 decimals coincide. The cubic root of 215261060 is about 599.3150145855.

The spelling of 215261060 in words is "two hundred fifteen million, two hundred sixty-one thousand, sixty".