28054491264 has 160 divisors (see below), whose sum is σ = 88401426300. Its totient is φ = 8801353728.

The previous prime is 28054491181. The next prime is 28054491271. The reversal of 28054491264 is 46219445082.

It is a happy number.

28054491264 is a `hidden beast` number, since 2 + 80 + 5 + 449 + 126 + 4 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 27161676864 + 892814400 = 164808^2 + 29880^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 96672 + ... + 255840.

Almost surely, 2^28054491264 is an apocalyptic number.

28054491264 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28054491264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44200713150).

28054491264 is an abundant number, since it is smaller than the sum of its proper divisors (60346935036).

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

28054491264 is a wasteful number, since it uses less digits than its factorization.

28054491264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159212 (or 159191 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 45.

The spelling of 28054491264 in words is "twenty-eight billion, fifty-four million, four hundred ninety-one thousand, two hundred sixty-four".