213861060 has 120 divisors (see below), whose sum is σ = 766772160. Its totient is φ = 48879936.

The previous prime is 213861049. The next prime is 213861077. The reversal of 213861060 is 60168312.

213861060 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1911 + ... + 20769.

It is an arithmetic number, because the mean of its divisors is an integer number (6389768).

Almost surely, 2^213861060 is an apocalyptic number.

213861060 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 213861060, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (383386080).

213861060 is an abundant number, since it is smaller than the sum of its proper divisors (552911100).

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

213861060 is a wasteful number, since it uses less digits than its factorization.

213861060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18887 (or 18876 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 213861060 is about 14623.9891958385. The cubic root of 213861060 is about 598.0129264962.

The spelling of 213861060 in words is "two hundred thirteen million, eight hundred sixty-one thousand, sixty".