209252568 has 32 divisors (see below), whose sum is σ = 597864960. Its totient is φ = 59786400.

The previous prime is 209252557. The next prime is 209252569. The reversal of 209252568 is 865252902.

209252568 is digitally balanced in base 2, 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 (39) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (209252569) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 622608 + ... + 622943.

It is an arithmetic number, because the mean of its divisors is an integer number (18683280).

Almost surely, 2^209252568 is an apocalyptic number.

209252568 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

209252568 is an abundant number, since it is smaller than the sum of its proper divisors (388612392).

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

209252568 is a wasteful number, since it uses less digits than its factorization.

209252568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1245567 (or 1245563 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 39.

The square root of 209252568 is about 14465.5649042822. The cubic root of 209252568 is about 593.6861700839.

The spelling of 209252568 in words is "two hundred nine million, two hundred fifty-two thousand, five hundred sixty-eight".