400275576 has 24 divisors (see below), whose sum is σ = 1084079880. Its totient is φ = 133425168.

The previous prime is 400275569. The next prime is 400275581. The reversal of 400275576 is 675572004.

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 400275576.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2779620 + ... + 2779763.

It is an arithmetic number, because the mean of its divisors is an integer number (45169995).

Almost surely, 2^400275576 is an apocalyptic number.

It is an amenable number.

400275576 is an abundant number, since it is smaller than the sum of its proper divisors (683804304).

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

400275576 is a wasteful number, since it uses less digits than its factorization.

400275576 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5559395 (or 5559388 counting only the distinct ones).

The product of its (nonzero) digits is 58800, while the sum is 36.

The square root of 400275576 is about 20006.8882138128. Note that the first 3 decimals coincide. The cubic root of 400275576 is about 736.9754659963.

The spelling of 400275576 in words is "four hundred million, two hundred seventy-five thousand, five hundred seventy-six".