28421440902 has 24 divisors (see below), whose sum is σ = 61972022736. Its totient is φ = 9413469936.

The previous prime is 28421440891. The next prime is 28421440907. The reversal of 28421440902 is 20904412482.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28421440907) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5025738 + ... + 5031389.

It is an arithmetic number, because the mean of its divisors is an integer number (2582167614).

Almost surely, 2^28421440902 is an apocalyptic number.

28421440902 is an abundant number, since it is smaller than the sum of its proper divisors (33550581834).

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

28421440902 is a wasteful number, since it uses less digits than its factorization.

28421440902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10057292 (or 10057289 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 36.

The spelling of 28421440902 in words is "twenty-eight billion, four hundred twenty-one million, four hundred forty thousand, nine hundred two".