205057060 has 72 divisors (see below), whose sum is σ = 492808680. Its totient is φ = 71233536.

The previous prime is 205057049. The next prime is 205057081. The reversal of 205057060 is 60750502.

It is a happy number.

It can be written as a sum of positive squares in 12 ways, for example, as 910116 + 204146944 = 954^2 + 14288^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 73776 + ... + 76504.

It is an arithmetic number, because the mean of its divisors is an integer number (6844565).

Almost surely, 2^205057060 is an apocalyptic number.

205057060 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 205057060, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (246404340).

205057060 is an abundant number, since it is smaller than the sum of its proper divisors (287751620).

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

205057060 is a wasteful number, since it uses less digits than its factorization.

205057060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2785 (or 2766 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 25.

The square root of 205057060 is about 14319.8135462722. The cubic root of 205057060 is about 589.6915557170.

The spelling of 205057060 in words is "two hundred five million, fifty-seven thousand, sixty".