28369840148 has 12 divisors (see below), whose sum is σ = 53466237300. Its totient is φ = 13093772352.

The previous prime is 28369840141. The next prime is 28369840157. The reversal of 28369840148 is 84104896382.

It can be written as a sum of positive squares in 2 ways, for example, as 9890700304 + 18479139844 = 99452^2 + 135938^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 28369840148.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28369840141) 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 3 ways as a sum of consecutive naturals, for example, 272786873 + ... + 272786976.

It is an arithmetic number, because the mean of its divisors is an integer number (4455519775).

Almost surely, 2^28369840148 is an apocalyptic number.

It is an amenable number.

28369840148 is a deficient number, since it is larger than the sum of its proper divisors (25096397152).

28369840148 is a wasteful number, since it uses less digits than its factorization.

28369840148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 545573866 (or 545573864 counting only the distinct ones).

The product of its (nonzero) digits is 2654208, while the sum is 53.

The spelling of 28369840148 in words is "twenty-eight billion, three hundred sixty-nine million, eight hundred forty thousand, one hundred forty-eight".