28844418490 has 36 divisors (see below), whose sum is σ = 53198066574. Its totient is φ = 11260424448.

The previous prime is 28844418479. The next prime is 28844418497. The reversal of 28844418490 is 9481444882.

It can be written as a sum of positive squares in 3 ways, for example, as 20837211201 + 8007207289 = 144351^2 + 89483^2 .

It is not an unprimeable number, because it can be changed into a prime (28844418497) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 23093386 + ... + 23094634.

Almost surely, 2^28844418490 is an apocalyptic number.

28844418490 is a deficient number, since it is larger than the sum of its proper divisors (24353648084).

28844418490 is an frugal number, since it uses more digits than its factorization.

28844418490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2591 (or 1299 counting only the distinct ones).

The product of its (nonzero) digits is 2359296, while the sum is 52.

The spelling of 28844418490 in words is "twenty-eight billion, eight hundred forty-four million, four hundred eighteen thousand, four hundred ninety".