28038486439044 has 81 divisors (see below), whose sum is σ = 71447810307237. Its totient is φ = 9271235943648.

The previous prime is 28038486438997. The next prime is 28038486439049. The reversal of 28038486439044 is 44093468483082.

The square root of 28038486439044 is 5295138.

It is a perfect power (a square), and thus also a powerful number.

28038486439044 is a `hidden beast` number, since 2 + 8 + 0 + 3 + 84 + 86 + 439 + 0 + 44 = 666.

It can be written as a sum of positive squares in only one way, i.e., 24524661208644 + 3513825230400 = 4952238^2 + 1874520^2 .

It is not an unprimeable number, because it can be changed into a prime (28038486439049) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 4034891682 + ... + 4034898630.

Almost surely, 2^{28038486439044} is an apocalyptic number.

28038486439044 is the 5295138-th square number.

It is an amenable number.

28038486439044 is an abundant number, since it is smaller than the sum of its proper divisors (43409323868193).

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

28038486439044 is an frugal number, since it uses more digits than its factorization.

28038486439044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14162 (or 7081 counting only the distinct ones).

The product of its (nonzero) digits is 127401984, while the sum is 63.

The spelling of 28038486439044 in words is "twenty-eight trillion, thirty-eight billion, four hundred eighty-six million, four hundred thirty-nine thousand, forty-four".