400652 has 24 divisors (see below), whose sum is σ = 823200. Its totient is φ = 167040.

The previous prime is 400651. The next prime is 400657. The reversal of 400652 is 256004.

It is a self number, because there is not a number n which added to its sum of digits gives 400652.

It is not an unprimeable number, because it can be changed into a prime (400651) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 974 + ... + 1322.

It is an arithmetic number, because the mean of its divisors is an integer number (34300).

2⁴⁰⁰⁶⁵² 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 400652, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (411600).

400652 is an abundant number, since it is smaller than the sum of its proper divisors (422548).

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

400652 is a wasteful number, since it uses less digits than its factorization.

400652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 401 (or 399 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 400652 is about 632.9707734169. The cubic root of 400652 is about 73.7206413834.

Adding to 400652 its reverse (256004), we get a palindrome (656656).

The spelling of 400652 in words is "four hundred thousand, six hundred fifty-two".