28731730288886 has 16 divisors (see below), whose sum is σ = 45471147240960. Its totient is φ = 13578189785640.

The previous prime is 28731730288873. The next prime is 28731730288909. The reversal of 28731730288886 is 68888203713782.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 877127666 + ... + 877160421.

It is an arithmetic number, because the mean of its divisors is an integer number (2841946702560).

Almost surely, 2^{28731730288886} is an apocalyptic number.

28731730288886 is a deficient number, since it is larger than the sum of its proper divisors (16739416952074).

28731730288886 is a wasteful number, since it uses less digits than its factorization.

28731730288886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1754288539.

The product of its (nonzero) digits is 346816512, while the sum is 71.

The spelling of 28731730288886 in words is "twenty-eight trillion, seven hundred thirty-one billion, seven hundred thirty million, two hundred eighty-eight thousand, eight hundred eighty-six".