28245991494 has 48 divisors (see below), whose sum is σ = 65740950000. Its totient is φ = 8067116736.

The previous prime is 28245991457. The next prime is 28245991507. The reversal of 28245991494 is 49419954282.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 790732 + ... + 825680.

It is an arithmetic number, because the mean of its divisors is an integer number (1369603125).

Almost surely, 2^28245991494 is an apocalyptic number.

28245991494 is an abundant number, since it is smaller than the sum of its proper divisors (37494958506).

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

28245991494 is a wasteful number, since it uses less digits than its factorization.

28245991494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37717 (or 37710 counting only the distinct ones).

The product of its digits is 7464960, while the sum is 57.

The spelling of 28245991494 in words is "twenty-eight billion, two hundred forty-five million, nine hundred ninety-one thousand, four hundred ninety-four".