400235456 has 84 divisors (see below), whose sum is σ = 859917000. Its totient is φ = 184306176.

The previous prime is 400235447. The next prime is 400235477. The reversal of 400235456 is 654532004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2686070 + ... + 2686218.

Almost surely, 2^400235456 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 400235456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (429958500).

400235456 is an abundant number, since it is smaller than the sum of its proper divisors (459681544).

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

400235456 is a wasteful number, since it uses less digits than its factorization.

400235456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274 (or 217 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 29.

The square root of 400235456 is about 20005.8855340122. The cubic root of 400235456 is about 736.9508425906.

The spelling of 400235456 in words is "four hundred million, two hundred thirty-five thousand, four hundred fifty-six".