28485284890 has 8 divisors (see below), whose sum is σ = 51273512820. Its totient is φ = 11394113952.

The previous prime is 28485284879. The next prime is 28485284917. The reversal of 28485284890 is 9848258482.

It can be written as a sum of positive squares in 2 ways, for example, as 27775222281 + 710062609 = 166659^2 + 26647^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×28485284890² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1424264235 + ... + 1424264254.

Almost surely, 2^28485284890 is an apocalyptic number.

28485284890 is a deficient number, since it is larger than the sum of its proper divisors (22788227930).

28485284890 is a wasteful number, since it uses less digits than its factorization.

28485284890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2848528496.

The product of its (nonzero) digits is 11796480, while the sum is 58.

The spelling of 28485284890 in words is "twenty-eight billion, four hundred eighty-five million, two hundred eighty-four thousand, eight hundred ninety".