28729703924 has 24 divisors (see below), whose sum is σ = 51104769408. Its totient is φ = 14129415360.

The previous prime is 28729703909. The next prime is 28729703929. The reversal of 28729703924 is 42930792782.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28729703929) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26882 + ... + 241209.

It is an arithmetic number, because the mean of its divisors is an integer number (2129365392).

Almost surely, 2^28729703924 is an apocalyptic number.

It is an amenable number.

28729703924 is a deficient number, since it is larger than the sum of its proper divisors (22375065484).

28729703924 is a wasteful number, since it uses less digits than its factorization.

28729703924 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268535 (or 268533 counting only the distinct ones).

The product of its (nonzero) digits is 3048192, while the sum is 53.

The spelling of 28729703924 in words is "twenty-eight billion, seven hundred twenty-nine million, seven hundred three thousand, nine hundred twenty-four".