28999638910 has 32 divisors (see below), whose sum is σ = 57171671424. Its totient is φ = 10503300000.

The previous prime is 28999638907. The next prime is 28999638919. The reversal of 28999638910 is 1983699982.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28999638919) 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, 497556 + ... + 552775.

It is an arithmetic number, because the mean of its divisors is an integer number (1786614732).

Almost surely, 2^28999638910 is an apocalyptic number.

28999638910 is a deficient number, since it is larger than the sum of its proper divisors (28172032514).

28999638910 is a wasteful number, since it uses less digits than its factorization.

28999638910 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1050600.

The product of its (nonzero) digits is 15116544, while the sum is 64.

The spelling of 28999638910 in words is "twenty-eight billion, nine hundred ninety-nine million, six hundred thirty-eight thousand, nine hundred ten".