28390493754 has 48 divisors (see below), whose sum is σ = 72200289408. Its totient is φ = 7892336736.

The previous prime is 28390493753. The next prime is 28390493759. The reversal of 28390493754 is 45739409382.

28390493754 is a `hidden beast` number, since 2 + 83 + 9 + 0 + 493 + 75 + 4 = 666.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 28390493754.

It is not an unprimeable number, because it can be changed into a prime (28390493753) by changing a digit.

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, 3040222 + ... + 3049545.

It is an arithmetic number, because the mean of its divisors is an integer number (1504172696).

Almost surely, 2^28390493754 is an apocalyptic number.

28390493754 is an abundant number, since it is smaller than the sum of its proper divisors (43809795654).

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

28390493754 is a wasteful number, since it uses less digits than its factorization.

28390493754 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6089819 (or 6089816 counting only the distinct ones).

The product of its (nonzero) digits is 6531840, while the sum is 54.

The spelling of 28390493754 in words is "twenty-eight billion, three hundred ninety million, four hundred ninety-three thousand, seven hundred fifty-four".