28783156448 has 24 divisors (see below), whose sum is σ = 57872519712. Its totient is φ = 14085373696.

The previous prime is 28783156397. The next prime is 28783156453. The reversal of 28783156448 is 84465138782.

It is a super-2 number, since 2×28783156448² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 28783156393 and 28783156402.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 9567365 + ... + 9570372.

It is an arithmetic number, because the mean of its divisors is an integer number (2411354988).

Almost surely, 2^28783156448 is an apocalyptic number.

It is an amenable number.

28783156448 is an abundant number, since it is smaller than the sum of its proper divisors (29089363264).

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

28783156448 is a wasteful number, since it uses less digits than its factorization.

28783156448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19137794 (or 19137786 counting only the distinct ones).

The product of its digits is 10321920, while the sum is 56.

The spelling of 28783156448 in words is "twenty-eight billion, seven hundred eighty-three million, one hundred fifty-six thousand, four hundred forty-eight".