28465037140 has 48 divisors (see below), whose sum is σ = 59973858000. Its totient is φ = 11348508672.

The previous prime is 28465037129. The next prime is 28465037141. The reversal of 28465037140 is 4173056482.

It can be written as a sum of positive squares in 8 ways, for example, as 2034731664 + 26430305476 = 45108^2 + 162574^2 .

It is a junction number, because it is equal to n+sod(n) for n = 28465037093 and 28465037102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28465037141) by changing a digit.

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 in 15 ways as a sum of consecutive naturals, for example, 9334336 + ... + 9337384.

It is an arithmetic number, because the mean of its divisors is an integer number (1249455375).

Almost surely, 2^28465037140 is an apocalyptic number.

28465037140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28465037140 is an abundant number, since it is smaller than the sum of its proper divisors (31508820860).

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

28465037140 is a wasteful number, since it uses less digits than its factorization.

28465037140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4444 (or 4442 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 40.

The spelling of 28465037140 in words is "twenty-eight billion, four hundred sixty-five million, thirty-seven thousand, one hundred forty".