28361851650 has 192 divisors, whose sum is σ = 86705164800. Its totient is φ = 6758856000.

The previous prime is 28361851643. The next prime is 28361851663. The reversal of 28361851650 is 5615816382.

28361851650 is a `hidden beast` number, since 2 + 83 + 6 + 1 + 8 + 516 + 50 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a junction number, because it is equal to n+sod(n) for n = 28361851596 and 28361851605.

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 95 ways as a sum of consecutive naturals, for example, 859965 + ... + 892335.

It is an arithmetic number, because the mean of its divisors is an integer number (451589400).

Almost surely, 2^28361851650 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28361851650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43352582400).

28361851650 is an abundant number, since it is smaller than the sum of its proper divisors (58343313150).

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

28361851650 is a wasteful number, since it uses less digits than its factorization.

28361851650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32462 (or 32451 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 45.

The spelling of 28361851650 in words is "twenty-eight billion, three hundred sixty-one million, eight hundred fifty-one thousand, six hundred fifty".