28618754456 has 32 divisors (see below), whose sum is σ = 56028637440. Its totient is φ = 13678571808.

The previous prime is 28618754399. The next prime is 28618754459. The reversal of 28618754456 is 65445781682.

It is a super-2 number, since 2×28618754456² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28618754459) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 247295 + ... + 344081.

It is an arithmetic number, because the mean of its divisors is an integer number (1750894920).

Almost surely, 2^28618754456 is an apocalyptic number.

It is an amenable number.

28618754456 is a deficient number, since it is larger than the sum of its proper divisors (27409882984).

28618754456 is a wasteful number, since it uses less digits than its factorization.

28618754456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98423 (or 98419 counting only the distinct ones).

The product of its digits is 12902400, while the sum is 56.

The spelling of 28618754456 in words is "twenty-eight billion, six hundred eighteen million, seven hundred fifty-four thousand, four hundred fifty-six".