400060644 has 24 divisors (see below), whose sum is σ = 934264128. Its totient is φ = 133240800.

The previous prime is 400060627. The next prime is 400060667. The reversal of 400060644 is 446060004.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1369 + ... + 28319.

It is an arithmetic number, because the mean of its divisors is an integer number (38927672).

Almost surely, 2^400060644 is an apocalyptic number.

It is an amenable number.

400060644 is an abundant number, since it is smaller than the sum of its proper divisors (534203484).

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

400060644 is a wasteful number, since it uses less digits than its factorization.

400060644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28195 (or 28193 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 400060644 is about 20001.5160425404. The cubic root of 400060644 is about 736.8435335808.

The spelling of 400060644 in words is "four hundred million, sixty thousand, six hundred forty-four".