28788819502 has 4 divisors (see below), whose sum is σ = 43183229256. Its totient is φ = 14394409750.

The previous prime is 28788819481. The next prime is 28788819529. The reversal of 28788819502 is 20591888782.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×28788819502² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 7197204874 + ... + 7197204877.

It is an arithmetic number, because the mean of its divisors is an integer number (10795807314).

Almost surely, 2^28788819502 is an apocalyptic number.

28788819502 is a deficient number, since it is larger than the sum of its proper divisors (14394409754).

28788819502 is a wasteful number, since it uses less digits than its factorization.

28788819502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14394409753.

The product of its (nonzero) digits is 5160960, while the sum is 58.

The spelling of 28788819502 in words is "twenty-eight billion, seven hundred eighty-eight million, eight hundred nineteen thousand, five hundred two".