28780174320 has 160 divisors (see below), whose sum is σ = 92195051520. Its totient is φ = 7419202560.

The previous prime is 28780174301. The next prime is 28780174349. The reversal of 28780174320 is 2347108782.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10630407 + ... + 10633113.

It is an arithmetic number, because the mean of its divisors is an integer number (576219072).

Almost surely, 2^28780174320 is an apocalyptic number.

28780174320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28780174320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46097525760).

28780174320 is an abundant number, since it is smaller than the sum of its proper divisors (63414877200).

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

28780174320 is a wasteful number, since it uses less digits than its factorization.

28780174320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4183 (or 4177 counting only the distinct ones).

The product of its (nonzero) digits is 150528, while the sum is 42.

The spelling of 28780174320 in words is "twenty-eight billion, seven hundred eighty million, one hundred seventy-four thousand, three hundred twenty".