205437630 has 32 divisors (see below), whose sum is σ = 501137568. Its totient is φ = 53884800.

The previous prime is 205437629. The next prime is 205437637. The reversal of 205437630 is 36734502.

205437630 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205437637) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54301 + ... + 57960.

It is an arithmetic number, because the mean of its divisors is an integer number (15660549).

Almost surely, 2^205437630 is an apocalyptic number.

205437630 is an abundant number, since it is smaller than the sum of its proper divisors (295699938).

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

205437630 is a wasteful number, since it uses less digits than its factorization.

205437630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112332.

The product of its (nonzero) digits is 15120, while the sum is 30.

The square root of 205437630 is about 14333.0956181838. The cubic root of 205437630 is about 590.0561375293.

The spelling of 205437630 in words is "two hundred five million, four hundred thirty-seven thousand, six hundred thirty".