28085737744 has 15 divisors (see below), whose sum is σ = 54417415717. Its totient is φ = 14042533696.

The previous prime is 28085737721. The next prime is 28085737787. The reversal of 28085737744 is 44773758082.

The square root of 28085737744 is 167588.

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

It can be written as a sum of positive squares in only one way, i.e., 19527267600 + 8558470144 = 139740^2 + 92512^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 649404 + ... + 691300.

Almost surely, 2^28085737744 is an apocalyptic number.

28085737744 is the 167588-th square number.

It is an amenable number.

28085737744 is a deficient number, since it is larger than the sum of its proper divisors (26331677973).

28085737744 is an frugal number, since it uses more digits than its factorization.

28085737744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83802 (or 41899 counting only the distinct ones).

The product of its (nonzero) digits is 10536960, while the sum is 55.

The spelling of 28085737744 in words is "twenty-eight billion, eighty-five million, seven hundred thirty-seven thousand, seven hundred forty-four".