28445124404 has 18 divisors (see below), whose sum is σ = 52879389990. Its totient is φ = 13385940352.

The previous prime is 28445124401. The next prime is 28445124413. The reversal of 28445124404 is 40442154482.

It can be written as a sum of positive squares in 3 ways, for example, as 9505860004 + 18939264400 = 97498^2 + 137620^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28445124401) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12302099 + ... + 12304410.

Almost surely, 2^28445124404 is an apocalyptic number.

It is an amenable number.

28445124404 is a deficient number, since it is larger than the sum of its proper divisors (24434265586).

28445124404 is a wasteful number, since it uses less digits than its factorization.

28445124404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24606547 (or 24606528 counting only the distinct ones).

The product of its (nonzero) digits is 163840, while the sum is 38.

Adding to 28445124404 its reverse (40442154482), we get a palindrome (68887278886).

The spelling of 28445124404 in words is "twenty-eight billion, four hundred forty-five million, one hundred twenty-four thousand, four hundred four".