252111830 has 8 divisors (see below), whose sum is σ = 453801312. Its totient is φ = 100844728.

The previous prime is 252111803. The next prime is 252111833. The reversal of 252111830 is 38111252.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 252111796 and 252111805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252111833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12605582 + ... + 12605601.

It is an arithmetic number, because the mean of its divisors is an integer number (56725164).

Almost surely, 2^252111830 is an apocalyptic number.

252111830 is a deficient number, since it is larger than the sum of its proper divisors (201689482).

252111830 is a wasteful number, since it uses less digits than its factorization.

252111830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25211190.

The product of its (nonzero) digits is 480, while the sum is 23.

The square root of 252111830 is about 15878.0297896181. The cubic root of 252111830 is about 631.7293796112.

The spelling of 252111830 in words is "two hundred fifty-two million, one hundred eleven thousand, eight hundred thirty".