400504260 has 96 divisors (see below), whose sum is σ = 1211374080. Its totient is φ = 98284032.

The previous prime is 400504253. The next prime is 400504261. The reversal of 400504260 is 62405004.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (400504261) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 360586 + ... + 361694.

It is an arithmetic number, because the mean of its divisors is an integer number (12618480).

Almost surely, 2^400504260 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 400504260, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (605687040).

400504260 is an abundant number, since it is smaller than the sum of its proper divisors (810869820).

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

400504260 is a wasteful number, since it uses less digits than its factorization.

400504260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1597 (or 1595 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 400504260 is about 20012.6025294063. The cubic root of 400504260 is about 737.1157879996.

Adding to 400504260 its reverse (62405004), we get a palindrome (462909264).

The spelling of 400504260 in words is "four hundred million, five hundred four thousand, two hundred sixty".