28148303736 has 128 divisors (see below), whose sum is σ = 89449920000. Its totient is φ = 8034253056.

The previous prime is 28148303731. The next prime is 28148303737. The reversal of 28148303736 is 63730384182.

It is a super-2 number, since 2×28148303736² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 28148303691 and 28148303700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28148303731) 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 31 ways as a sum of consecutive naturals, for example, 1577215 + ... + 1594961.

It is an arithmetic number, because the mean of its divisors is an integer number (698827500).

Almost surely, 2^28148303736 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28148303736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44724960000).

28148303736 is an abundant number, since it is smaller than the sum of its proper divisors (61301616264).

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

28148303736 is a wasteful number, since it uses less digits than its factorization.

28148303736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18818 (or 18808 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 45.

The spelling of 28148303736 in words is "twenty-eight billion, one hundred forty-eight million, three hundred three thousand, seven hundred thirty-six".