28037855998 has 4 divisors (see below), whose sum is σ = 42056784000. Its totient is φ = 14018927998.

The previous prime is 28037855983. The next prime is 28037856001. The reversal of 28037855998 is 89955873082.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×28037855998² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7009463998 + ... + 7009464001.

It is an arithmetic number, because the mean of its divisors is an integer number (10514196000).

Almost surely, 2^28037855998 is an apocalyptic number.

28037855998 is a deficient number, since it is larger than the sum of its proper divisors (14018928002).

28037855998 is a wasteful number, since it uses less digits than its factorization.

28037855998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14018928001.

The product of its (nonzero) digits is 43545600, while the sum is 64.

The spelling of 28037855998 in words is "twenty-eight billion, thirty-seven million, eight hundred fifty-five thousand, nine hundred ninety-eight".