252406 has 24 divisors (see below), whose sum is σ = 478800. Its totient is φ = 97680.

The previous prime is 252401. The next prime is 252409. The reversal of 252406 is 604252.

It is a pancake number, because a pancake can be divided into 252406 parts by 710 straight cuts.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252401) by changing a digit.

252406 is an untouchable number, because it is not equal to the sum of proper divisors of any 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 11 ways as a sum of consecutive naturals, for example, 1620 + ... + 1768.

It is an arithmetic number, because the mean of its divisors is an integer number (19950).

2²⁵²⁴⁰⁶ is an apocalyptic number.

252406 is a deficient number, since it is larger than the sum of its proper divisors (226394).

252406 is a wasteful number, since it uses less digits than its factorization.

252406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180 (or 169 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 252406 is about 502.4002388534. The cubic root of 252406 is about 63.1974989663.

Adding to 252406 its reverse (604252), we get a palindrome (856658).

The spelling of 252406 in words is "two hundred fifty-two thousand, four hundred six".