28081834530 has 64 divisors (see below), whose sum is σ = 70186411008. Its totient is φ = 7182766080.

The previous prime is 28081834483. The next prime is 28081834531. The reversal of 28081834530 is 3543818082.

It is not an unprimeable number, because it can be changed into a prime (28081834531) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28519 + ... + 238698.

It is an arithmetic number, because the mean of its divisors is an integer number (1096662672).

Almost surely, 2^28081834530 is an apocalyptic number.

28081834530 is an abundant number, since it is smaller than the sum of its proper divisors (42104576478).

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

28081834530 is a wasteful number, since it uses less digits than its factorization.

28081834530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267371.

The product of its (nonzero) digits is 184320, while the sum is 42.

The spelling of 28081834530 in words is "twenty-eight billion, eighty-one million, eight hundred thirty-four thousand, five hundred thirty".