28707735460 has 24 divisors (see below), whose sum is σ = 60425491896. Its totient is φ = 11456570880.

The previous prime is 28707735401. The next prime is 28707735467. The reversal of 28707735460 is 6453770782.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1509788736 + 27197946724 = 38856^2 + 164918^2 .

It is not an unprimeable number, because it can be changed into a prime (28707735467) 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 7 ways as a sum of consecutive naturals, for example, 1648831 + ... + 1666150.

It is an arithmetic number, because the mean of its divisors is an integer number (2517728829).

Almost surely, 2^28707735460 is an apocalyptic number.

28707735460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28707735460 is an abundant number, since it is smaller than the sum of its proper divisors (31717756436).

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

28707735460 is a wasteful number, since it uses less digits than its factorization.

28707735460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3315423 (or 3315421 counting only the distinct ones).

The product of its (nonzero) digits is 1975680, while the sum is 49.

The spelling of 28707735460 in words is "twenty-eight billion, seven hundred seven million, seven hundred thirty-five thousand, four hundred sixty".