28055055004 has 12 divisors (see below), whose sum is σ = 49380141384. Its totient is φ = 13946443184.

The previous prime is 28055054971. The next prime is 28055055031. The reversal of 28055055004 is 40055055082.

It is a super-2 number, since 2×28055055004² (a number of 22 digits) contains 22 as substring.

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, 20270302 + ... + 20271685.

It is an arithmetic number, because the mean of its divisors is an integer number (4115011782).

Almost surely, 2^28055055004 is an apocalyptic number.

It is an amenable number.

28055055004 is a deficient number, since it is larger than the sum of its proper divisors (21325086380).

28055055004 is a wasteful number, since it uses less digits than its factorization.

28055055004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40542164 (or 40542162 counting only the distinct ones).

The product of its (nonzero) digits is 40000, while the sum is 34.

The spelling of 28055055004 in words is "twenty-eight billion, fifty-five million, fifty-five thousand, four".