28845398240 has 48 divisors (see below), whose sum is σ = 68683894272. Its totient is φ = 11447299584.

The previous prime is 28845398237. The next prime is 28845398249. The reversal of 28845398240 is 4289354882.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28845398249) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 689459 + ... + 730098.

It is an arithmetic number, because the mean of its divisors is an integer number (1430914464).

Almost surely, 2^28845398240 is an apocalyptic number.

28845398240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28845398240 is an abundant number, since it is smaller than the sum of its proper divisors (39838496032).

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

28845398240 is a wasteful number, since it uses less digits than its factorization.

28845398240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1419699 (or 1419691 counting only the distinct ones).

The product of its (nonzero) digits is 4423680, while the sum is 53.

The spelling of 28845398240 in words is "twenty-eight billion, eight hundred forty-five million, three hundred ninety-eight thousand, two hundred forty".