400252 has 12 divisors (see below), whose sum is σ = 715680. Its totient is φ = 195776.

The previous prime is 400249. The next prime is 400261. The reversal of 400252 is 252004.

It is a happy number.

400252 is nontrivially palindromic in base 15.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 877 + ... + 1252.

It is an arithmetic number, because the mean of its divisors is an integer number (59640).

2⁴⁰⁰²⁵² is an apocalyptic number.

It is an amenable number.

400252 is a deficient number, since it is larger than the sum of its proper divisors (315428).

400252 is a wasteful number, since it uses less digits than its factorization.

400252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2180 (or 2178 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 13.

The square root of 400252 is about 632.6547241584. The cubic root of 400252 is about 73.6960996569.

Adding to 400252 its reverse (252004), we get a palindrome (652256).

The spelling of 400252 in words is "four hundred thousand, two hundred fifty-two".