252306646 has 4 divisors (see below), whose sum is σ = 378459972. Its totient is φ = 126153322.

The previous prime is 252306631. The next prime is 252306647. The reversal of 252306646 is 646603252.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252306647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63076660 + ... + 63076663.

It is an arithmetic number, because the mean of its divisors is an integer number (94614993).

Almost surely, 2^252306646 is an apocalyptic number.

252306646 is a deficient number, since it is larger than the sum of its proper divisors (126153326).

252306646 is a wasteful number, since it uses less digits than its factorization.

252306646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126153325.

The product of its (nonzero) digits is 51840, while the sum is 34.

The square root of 252306646 is about 15884.1633711065. The cubic root of 252306646 is about 631.8920578216.

Adding to 252306646 its reverse (646603252), we get a palindrome (898909898).

The spelling of 252306646 in words is "two hundred fifty-two million, three hundred six thousand, six hundred forty-six".