28173784290 has 16 divisors (see below), whose sum is σ = 67617082368. Its totient is φ = 7513009136.

The previous prime is 28173784283. The next prime is 28173784291. The reversal of 28173784290 is 9248737182.

It is not an unprimeable number, because it can be changed into a prime (28173784291) 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, 469563042 + ... + 469563101.

It is an arithmetic number, because the mean of its divisors is an integer number (4226067648).

Almost surely, 2^28173784290 is an apocalyptic number.

28173784290 is an abundant number, since it is smaller than the sum of its proper divisors (39443298078).

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

28173784290 is a wasteful number, since it uses less digits than its factorization.

28173784290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 939126153.

The product of its (nonzero) digits is 1354752, while the sum is 51.

The spelling of 28173784290 in words is "twenty-eight billion, one hundred seventy-three million, seven hundred eighty-four thousand, two hundred ninety".