252738866 has 16 divisors (see below), whose sum is σ = 382536000. Its totient is φ = 125231088.

The previous prime is 252738859. The next prime is 252738887. The reversal of 252738866 is 668837252.

It is a happy number.

252738866 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 252738866.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 190955 + ... + 192273.

It is an arithmetic number, because the mean of its divisors is an integer number (23908500).

Almost surely, 2^252738866 is an apocalyptic number.

252738866 is a deficient number, since it is larger than the sum of its proper divisors (129797134).

252738866 is a wasteful number, since it uses less digits than its factorization.

252738866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2113.

The product of its digits is 967680, while the sum is 47.

The square root of 252738866 is about 15897.7629243866. The cubic root of 252738866 is about 632.2526779659.

The spelling of 252738866 in words is "two hundred fifty-two million, seven hundred thirty-eight thousand, eight hundred sixty-six".