28489937594 has 16 divisors (see below), whose sum is σ = 45261362088. Its totient is φ = 13403284992.

The previous prime is 28489937587. The next prime is 28489937621. The reversal of 28489937594 is 49573998482.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 14456455225 + 14033482369 = 120235^2 + 118463^2 .

It is a super-2 number, since 2×28489937594² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8462 + ... + 238854.

Almost surely, 2^28489937594 is an apocalyptic number.

28489937594 is a deficient number, since it is larger than the sum of its proper divisors (16771424494).

28489937594 is a wasteful number, since it uses less digits than its factorization.

28489937594 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234049.

The product of its digits is 156764160, while the sum is 68.

The spelling of 28489937594 in words is "twenty-eight billion, four hundred eighty-nine million, nine hundred thirty-seven thousand, five hundred ninety-four".