28728887310 has 24 divisors (see below), whose sum is σ = 74695107240. Its totient is φ = 7661036592.

The previous prime is 28728887303. The next prime is 28728887347. The reversal of 28728887310 is 1378882782.

28728887310 is a `hidden beast` number, since 287 + 288 + 8 + 73 + 10 = 666.

It is a super-2 number, since 2×28728887310² (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 (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 159604840 + ... + 159605019.

It is an arithmetic number, because the mean of its divisors is an integer number (3112296135).

Almost surely, 2^28728887310 is an apocalyptic number.

28728887310 is an abundant number, since it is smaller than the sum of its proper divisors (45966219930).

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

28728887310 is a wasteful number, since it uses less digits than its factorization.

28728887310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319209872 (or 319209869 counting only the distinct ones).

The product of its (nonzero) digits is 2408448, while the sum is 54.

The spelling of 28728887310 in words is "twenty-eight billion, seven hundred twenty-eight million, eight hundred eighty-seven thousand, three hundred ten".