455438256 has 160 divisors (see below), whose sum is σ = 1461239808. Its totient is φ = 119024640.

The previous prime is 455438231. The next prime is 455438257. The reversal of 455438256 is 652834554.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (455438257) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 554326 + ... + 555146.

Almost surely, 2^455438256 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 455438256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (730619904).

455438256 is an abundant number, since it is smaller than the sum of its proper divisors (1005801552).

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

455438256 is a wasteful number, since it uses less digits than its factorization.

455438256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 979 (or 973 counting only the distinct ones).

The product of its digits is 576000, while the sum is 42.

The square root of 455438256 is about 21340.9994142730. Note that the first 3 decimals coincide. The cubic root of 455438256 is about 769.3840331617.

The spelling of 455438256 in words is "four hundred fifty-five million, four hundred thirty-eight thousand, two hundred fifty-six".