28419005638 has 8 divisors (see below), whose sum is σ = 45136067832. Its totient is φ = 13373649696.

The previous prime is 28419005617. The next prime is 28419005647. The reversal of 28419005638 is 83650091482.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 417926520 + ... + 417926587.

It is an arithmetic number, because the mean of its divisors is an integer number (5642008479).

Almost surely, 2^28419005638 is an apocalyptic number.

28419005638 is a deficient number, since it is larger than the sum of its proper divisors (16717062194).

28419005638 is a wasteful number, since it uses less digits than its factorization.

28419005638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 835853126.

The product of its (nonzero) digits is 414720, while the sum is 46.

The spelling of 28419005638 in words is "twenty-eight billion, four hundred nineteen million, five thousand, six hundred thirty-eight".