28578522130 has 16 divisors (see below), whose sum is σ = 52831647000. Its totient is φ = 11122451712.

The previous prime is 28578522103. The next prime is 28578522151. The reversal of 28578522130 is 3122587582.

It can be written as a sum of positive squares in 4 ways, for example, as 22542319881 + 6036202249 = 150141^2 + 77693^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38619255 + ... + 38619994.

Almost surely, 2^28578522130 is an apocalyptic number.

28578522130 is a deficient number, since it is larger than the sum of its proper divisors (24253124870).

28578522130 is a wasteful number, since it uses less digits than its factorization.

28578522130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77239293.

The product of its (nonzero) digits is 268800, while the sum is 43.

The spelling of 28578522130 in words is "twenty-eight billion, five hundred seventy-eight million, five hundred twenty-two thousand, one hundred thirty".