28220105752 has 16 divisors (see below), whose sum is σ = 54619560000. Its totient is φ = 13654889760.

The previous prime is 28220105741. The next prime is 28220105761. The reversal of 28220105752 is 25750102282.

It is a super-3 number, since 3×28220105752³ (a number of 32 digits) contains 333 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, 56895127 + ... + 56895622.

It is an arithmetic number, because the mean of its divisors is an integer number (3413722500).

Almost surely, 2^28220105752 is an apocalyptic number.

It is an amenable number.

28220105752 is a deficient number, since it is larger than the sum of its proper divisors (26399454248).

28220105752 is a wasteful number, since it uses less digits than its factorization.

28220105752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113790786 (or 113790782 counting only the distinct ones).

The product of its (nonzero) digits is 22400, while the sum is 34.

The spelling of 28220105752 in words is "twenty-eight billion, two hundred twenty million, one hundred five thousand, seven hundred fifty-two".