406243264 has 28 divisors (see below), whose sum is σ = 921302704. Its totient is φ = 174104064.

The previous prime is 406243247. The next prime is 406243283. The reversal of 406243264 is 462342604.

It is a tau number, because it is divible by the number of its divisors (28).

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 3 ways as a sum of consecutive naturals, for example, 452949 + ... + 453844.

It is an arithmetic number, because the mean of its divisors is an integer number (32903668).

Almost surely, 2^406243264 is an apocalyptic number.

It is an amenable number.

406243264 is an abundant number, since it is smaller than the sum of its proper divisors (515059440).

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

406243264 is an equidigital number, since it uses as much as digits as its factorization.

406243264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 906812 (or 906802 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 31.

The square root of 406243264 is about 20155.4772704593. The cubic root of 406243264 is about 740.6199236693.

Adding to 406243264 its reverse (462342604), we get a palindrome (868585868).

The spelling of 406243264 in words is "four hundred six million, two hundred forty-three thousand, two hundred sixty-four".