28273864454 has 16 divisors (see below), whose sum is σ = 46268905536. Its totient is φ = 12851039400.

The previous prime is 28273864441. The next prime is 28273864529. The reversal of 28273864454 is 45446837282.

It is a super-2 number, since 2×28273864454² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 28273864396 and 28273864405.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 752249 + ... + 788939.

It is an arithmetic number, because the mean of its divisors is an integer number (2891806596).

Almost surely, 2^28273864454 is an apocalyptic number.

28273864454 is a deficient number, since it is larger than the sum of its proper divisors (17995041082).

28273864454 is a wasteful number, since it uses less digits than its factorization.

28273864454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71731.

The product of its digits is 10321920, while the sum is 53.

The spelling of 28273864454 in words is "twenty-eight billion, two hundred seventy-three million, eight hundred sixty-four thousand, four hundred fifty-four".