28780190274 has 64 divisors (see below), whose sum is σ = 64788387840. Its totient is φ = 8448323520.

The previous prime is 28780190261. The next prime is 28780190281. The reversal of 28780190274 is 47209108782.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 224269 + ... + 328415.

It is an arithmetic number, because the mean of its divisors is an integer number (1012318560).

Almost surely, 2^28780190274 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28780190274, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32394193920).

28780190274 is an abundant number, since it is smaller than the sum of its proper divisors (36008197566).

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

28780190274 is a wasteful number, since it uses less digits than its factorization.

28780190274 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104295.

The product of its (nonzero) digits is 451584, while the sum is 48.

The spelling of 28780190274 in words is "twenty-eight billion, seven hundred eighty million, one hundred ninety thousand, two hundred seventy-four".