28452454452 has 18 divisors (see below), whose sum is σ = 71921482178. Its totient is φ = 9484151472.

The previous prime is 28452454427. The next prime is 28452454453. The reversal of 28452454452 is 25445425482.

28452454452 is a `hidden beast` number, since 2 + 8 + 4 + 52 + 4 + 544 + 52 = 666.

It can be written as a sum of positive squares in only one way, i.e., 27730242576 + 722211876 = 166524^2 + 26874^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a junction number, because it is equal to n+sod(n) for n = 28452454398 and 28452454407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28452454453) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 395172943 + ... + 395173014.

Almost surely, 2^28452454452 is an apocalyptic number.

It is an amenable number.

28452454452 is an abundant number, since it is smaller than the sum of its proper divisors (43469027726).

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

28452454452 is a wasteful number, since it uses less digits than its factorization.

28452454452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 790345967 (or 790345962 counting only the distinct ones).

The product of its digits is 2048000, while the sum is 45.

The spelling of 28452454452 in words is "twenty-eight billion, four hundred fifty-two million, four hundred fifty-four thousand, four hundred fifty-two".