205723070 has 72 divisors (see below), whose sum is σ = 455014584. Its totient is φ = 66763872.

The previous prime is 205723061. The next prime is 205723073. The reversal of 205723070 is 70327502.

205723070 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205723073) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 176309 + ... + 177471.

It is an arithmetic number, because the mean of its divisors is an integer number (6319647).

Almost surely, 2^205723070 is an apocalyptic number.

205723070 is an abundant number, since it is smaller than the sum of its proper divisors (249291514).

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

205723070 is a wasteful number, since it uses less digits than its factorization.

205723070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1222 (or 1196 counting only the distinct ones).

The product of its (nonzero) digits is 2940, while the sum is 26.

The square root of 205723070 is about 14343.0495362737. The cubic root of 205723070 is about 590.3292904714.

The spelling of 205723070 in words is "two hundred five million, seven hundred twenty-three thousand, seventy".