28116054540 has 72 divisors (see below), whose sum is σ = 97468993440. Its totient is φ = 6426526464.

The previous prime is 28116054521. The next prime is 28116054559. The reversal of 28116054540 is 4545061182.

It is a happy number.

28116054540 is a `hidden beast` number, since 2 + 8 + 1 + 1 + 60 + 54 + 540 = 666.

It is an interprime number because it is at equal distance from previous prime (28116054521) and next prime (28116054559).

It is a super-2 number, since 2×28116054540² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 28116054495 and 28116054504.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11155905 + ... + 11158424.

It is an arithmetic number, because the mean of its divisors is an integer number (1353736020).

Almost surely, 2^28116054540 is an apocalyptic number.

28116054540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28116054540 is an abundant number, since it is smaller than the sum of its proper divisors (69352938900).

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

28116054540 is a wasteful number, since it uses less digits than its factorization.

28116054540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22314351 (or 22314346 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 36.

The spelling of 28116054540 in words is "twenty-eight billion, one hundred sixteen million, fifty-four thousand, five hundred forty".