400052252 has 24 divisors (see below), whose sum is σ = 718114992. Its totient is φ = 194889600.

The previous prime is 400052249. The next prime is 400052327. The reversal of 400052252 is 252250004.

It is a Smith number, since the sum of its digits (20) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable 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 7 ways as a sum of consecutive naturals, for example, 197927 + ... + 199937.

It is an arithmetic number, because the mean of its divisors is an integer number (29921458).

Almost surely, 2^400052252 is an apocalyptic number.

It is an amenable number.

400052252 is a deficient number, since it is larger than the sum of its proper divisors (318062740).

400052252 is a wasteful number, since it uses less digits than its factorization.

400052252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3269 (or 3267 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 20.

The square root of 400052252 is about 20001.3062573423. The cubic root of 400052252 is about 736.8383813335.

The spelling of 400052252 in words is "four hundred million, fifty-two thousand, two hundred fifty-two".