28208620442 has 16 divisors (see below), whose sum is σ = 42597539712. Its totient is φ = 14009748000.

The previous prime is 28208620441. The next prime is 28208620459. The reversal of 28208620442 is 24402680282.

It is a junction number, because it is equal to n+sod(n) for n = 28208620396 and 28208620405.

It is not an unprimeable number, because it can be changed into a prime (28208620441) 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, 107678 + ... + 260790.

It is an arithmetic number, because the mean of its divisors is an integer number (2662346232).

Almost surely, 2^28208620442 is an apocalyptic number.

28208620442 is a deficient number, since it is larger than the sum of its proper divisors (14388919270).

28208620442 is a wasteful number, since it uses less digits than its factorization.

28208620442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153733.

The product of its (nonzero) digits is 98304, while the sum is 38.

The spelling of 28208620442 in words is "twenty-eight billion, two hundred eight million, six hundred twenty thousand, four hundred forty-two".