28744315731730 has 64 divisors (see below), whose sum is σ = 52583257866240. Its totient is φ = 11311385851584.

The previous prime is 28744315731721. The next prime is 28744315731743. The reversal of 28744315731730 is 3713751344782.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 337145967 + ... + 337231213.

It is an arithmetic number, because the mean of its divisors is an integer number (821613404160).

Almost surely, 2^{28744315731730} is an apocalyptic number.

28744315731730 is a deficient number, since it is larger than the sum of its proper divisors (23838942134510).

28744315731730 is a wasteful number, since it uses less digits than its factorization.

28744315731730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86863.

The product of its (nonzero) digits is 11854080, while the sum is 55.

The spelling of 28744315731730 in words is "twenty-eight trillion, seven hundred forty-four billion, three hundred fifteen million, seven hundred thirty-one thousand, seven hundred thirty".