28747256190 has 256 divisors, whose sum is σ = 78062019840. Its totient is φ = 6741688320.

The previous prime is 28747256183. The next prime is 28747256191. The reversal of 28747256190 is 9165274782.

It is a happy number.

It is a super-2 number, since 2×28747256190² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28747256191) by changing a digit.

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 127 ways as a sum of consecutive naturals, for example, 56477656 + ... + 56478164.

It is an arithmetic number, because the mean of its divisors is an integer number (304929765).

Almost surely, 2^28747256190 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28747256190, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39031009920).

28747256190 is an abundant number, since it is smaller than the sum of its proper divisors (49314763650).

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

28747256190 is a wasteful number, since it uses less digits than its factorization.

28747256190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 687.

The product of its (nonzero) digits is 1693440, while the sum is 51.

The spelling of 28747256190 in words is "twenty-eight billion, seven hundred forty-seven million, two hundred fifty-six thousand, one hundred ninety".