205208070 has 32 divisors (see below), whose sum is σ = 513914112. Its totient is φ = 52342752.

The previous prime is 205208057. The next prime is 205208099. The reversal of 205208070 is 70802502.

It is a super-2 number, since 2×205208070² = 84220703986249800, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 205208070.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 148012 + ... + 149391.

It is an arithmetic number, because the mean of its divisors is an integer number (16059816).

Almost surely, 2^205208070 is an apocalyptic number.

205208070 is an abundant number, since it is smaller than the sum of its proper divisors (308706042).

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

205208070 is a wasteful number, since it uses less digits than its factorization.

205208070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 297436.

The product of its (nonzero) digits is 1120, while the sum is 24.

The square root of 205208070 is about 14325.0853400599. The cubic root of 205208070 is about 589.8362755514.

The spelling of 205208070 in words is "two hundred five million, two hundred eight thousand, seventy".