400506260 has 96 divisors (see below), whose sum is σ = 1056706560. Its totient is φ = 123868800.

The previous prime is 400506259. The next prime is 400506283. The reversal of 400506260 is 62605004.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 213125 + ... + 214995.

It is an arithmetic number, because the mean of its divisors is an integer number (11007360).

Almost surely, 2^400506260 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 400506260, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (528353280).

400506260 is an abundant number, since it is smaller than the sum of its proper divisors (656200300).

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

400506260 is a wasteful number, since it uses less digits than its factorization.

400506260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2037 (or 2035 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 400506260 is about 20012.6524978574. The cubic root of 400506260 is about 737.1170149771.

The spelling of 400506260 in words is "four hundred million, five hundred six thousand, two hundred sixty".