406021260 has 96 divisors (see below), whose sum is σ = 1235404800. Its totient is φ = 99256320.

The previous prime is 406021247. The next prime is 406021261. The reversal of 406021260 is 62120604.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (406021261) 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, 29596 + ... + 41084.

It is an arithmetic number, because the mean of its divisors is an integer number (12868800).

Almost surely, 2^406021260 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 406021260, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (617702400).

406021260 is an abundant number, since it is smaller than the sum of its proper divisors (829383540).

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

406021260 is a wasteful number, since it uses less digits than its factorization.

406021260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11551 (or 11549 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 406021260 is about 20149.9692307457. The cubic root of 406021260 is about 740.4849876510.

Adding to 406021260 its reverse (62120604), we get a palindrome (468141864).

The spelling of 406021260 in words is "four hundred six million, twenty-one thousand, two hundred sixty".