400052568 has 64 divisors (see below), whose sum is σ = 1076976000. Its totient is φ = 123372032.

The previous prime is 400052557. The next prime is 400052591. The reversal of 400052568 is 865250004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15763 + ... + 32381.

It is an arithmetic number, because the mean of its divisors is an integer number (16827750).

Almost surely, 2^400052568 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 400052568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (538488000).

400052568 is an abundant number, since it is smaller than the sum of its proper divisors (676923432).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

400052568 is a wasteful number, since it uses less digits than its factorization.

400052568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16704 (or 16700 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 30.

The square root of 400052568 is about 20001.3141568248. The cubic root of 400052568 is about 736.8385753422.

The spelling of 400052568 in words is "four hundred million, fifty-two thousand, five hundred sixty-eight".