205816130 has 32 divisors (see below), whose sum is σ = 411844608. Its totient is φ = 73540800.

The previous prime is 205816109. The next prime is 205816153. The reversal of 205816130 is 31618502.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a self number, because there is not a number n which added to its sum of digits gives 205816130.

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, 21506 + ... + 29565.

It is an arithmetic number, because the mean of its divisors is an integer number (12870144).

Almost surely, 2^205816130 is an apocalyptic number.

205816130 is an abundant number, since it is smaller than the sum of its proper divisors (206028478).

205816130 is a wasteful number, since it uses less digits than its factorization.

205816130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51122.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 205816130 is about 14346.2932494774. The cubic root of 205816130 is about 590.4182899895.

The spelling of 205816130 in words is "two hundred five million, eight hundred sixteen thousand, one hundred thirty".