28277048481 has 16 divisors (see below), whose sum is σ = 43549679808. Its totient is φ = 16129510400.

The previous prime is 28277048441. The next prime is 28277048483. The reversal of 28277048481 is 18484077282.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 28277048481 - 2⁷ = 28277048353 is a prime.

It is a super-2 number, since 2×28277048481² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is not an unprimeable number, because it can be changed into a prime (28277048483) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25201800 + ... + 25202921.

It is an arithmetic number, because the mean of its divisors is an integer number (2721854988).

Almost surely, 2^28277048481 is an apocalyptic number.

It is an amenable number.

28277048481 is a deficient number, since it is larger than the sum of its proper divisors (15272631327).

28277048481 is a wasteful number, since it uses less digits than its factorization.

28277048481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50404752.

The product of its (nonzero) digits is 1605632, while the sum is 51.

The spelling of 28277048481 in words is "twenty-eight billion, two hundred seventy-seven million, forty-eight thousand, four hundred eighty-one".