28730072250 has 512 divisors, whose sum is σ = 93502356480. Its totient is φ = 6531840000.

The previous prime is 28730072249. The next prime is 28730072257. The reversal of 28730072250 is 5227003782.

It is a happy number.

28730072250 is a `hidden beast` number, since 287 + 300 + 7 + 22 + 50 = 666.

It is not an unprimeable number, because it can be changed into a prime (28730072257) by changing a digit.

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 255 ways as a sum of consecutive naturals, for example, 102242110 + ... + 102242390.

It is an arithmetic number, because the mean of its divisors is an integer number (182621790).

Almost surely, 2^28730072250 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28730072250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46751178240).

28730072250 is an abundant number, since it is smaller than the sum of its proper divisors (64772284230).

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

28730072250 is a wasteful number, since it uses less digits than its factorization.

28730072250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 347 (or 319 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 36.

The spelling of 28730072250 in words is "twenty-eight billion, seven hundred thirty million, seventy-two thousand, two hundred fifty".