28708150320 has 240 divisors, whose sum is σ = 101689667040. Its totient is φ = 7238025216.

The previous prime is 28708150319. The next prime is 28708150337. The reversal of 28708150320 is 2305180782.

28708150320 is a `hidden beast` number, since 2 + 8 + 70 + 81 + 503 + 2 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (240).

It is a super-2 number, since 2×28708150320² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7891542 + ... + 7895178.

It is an arithmetic number, because the mean of its divisors is an integer number (423706946).

Almost surely, 2^28708150320 is an apocalyptic number.

28708150320 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 28708150320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50844833520).

28708150320 is an abundant number, since it is smaller than the sum of its proper divisors (72981516720).

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

28708150320 is a wasteful number, since it uses less digits than its factorization.

28708150320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4252 (or 4243 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 36.

The spelling of 28708150320 in words is "twenty-eight billion, seven hundred eight million, one hundred fifty thousand, three hundred twenty".