455523640 has 128 divisors (see below), whose sum is σ = 1218006720. Its totient is φ = 151142400.

The previous prime is 455523631. The next prime is 455523647. The reversal of 455523640 is 46325554.

It is a junction number, because it is equal to n+sod(n) for n = 455523596 and 455523605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (455523647) 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, 554430 + ... + 555250.

Almost surely, 2^455523640 is an apocalyptic number.

455523640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 455523640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (609003360).

455523640 is an abundant number, since it is smaller than the sum of its proper divisors (762483080).

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

455523640 is a wasteful number, since it uses less digits than its factorization.

455523640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 953 (or 949 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 34.

The square root of 455523640 is about 21342.9997891580. Note that the first 3 decimals coincide. The cubic root of 455523640 is about 769.4321106494.

The spelling of 455523640 in words is "four hundred fifty-five million, five hundred twenty-three thousand, six hundred forty".