28043942530 has 32 divisors (see below), whose sum is σ = 51941736000. Its totient is φ = 10895462592.

The previous prime is 28043942513. The next prime is 28043942539. The reversal of 28043942530 is 3524934082.

It is not an unprimeable number, because it can be changed into a prime (28043942539) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 105205 + ... + 259144.

It is an arithmetic number, because the mean of its divisors is an integer number (1623179250).

Almost surely, 2^28043942530 is an apocalyptic number.

28043942530 is a deficient number, since it is larger than the sum of its proper divisors (23897793470).

28043942530 is a wasteful number, since it uses less digits than its factorization.

28043942530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 364578.

The product of its (nonzero) digits is 207360, while the sum is 40.

The spelling of 28043942530 in words is "twenty-eight billion, forty-three million, nine hundred forty-two thousand, five hundred thirty".