28279300544 has 28 divisors (see below), whose sum is σ = 61218260088. Its totient is φ = 12854227200.

The previous prime is 28279300537. The next prime is 28279300547. The reversal of 28279300544 is 44500397282.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a junction number, because it is equal to n+sod(n) for n = 28279300495 and 28279300504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28279300547) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20084027 + ... + 20085434.

Almost surely, 2^28279300544 is an apocalyptic number.

It is an amenable number.

28279300544 is an abundant number, since it is smaller than the sum of its proper divisors (32938959544).

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

28279300544 is a wasteful number, since it uses less digits than its factorization.

28279300544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40169484 (or 40169474 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 44.

It can be divided in two parts, 28279 and 300544, that added together give a palindrome (328823).

The spelling of 28279300544 in words is "twenty-eight billion, two hundred seventy-nine million, three hundred thousand, five hundred forty-four".