28220105751 has 8 divisors (see below), whose sum is σ = 37723536240. Its totient is φ = 18765039552.

The previous prime is 28220105741. The next prime is 28220105761. The reversal of 28220105751 is 15750102282.

It is an interprime number because it is at equal distance from previous prime (28220105741) and next prime (28220105761).

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

It is not a de Polignac number, because 28220105751 - 2¹³ = 28220097559 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28220105731) 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, 12089710 + ... + 12092043.

It is an arithmetic number, because the mean of its divisors is an integer number (4715442030).

Almost surely, 2^28220105751 is an apocalyptic number.

28220105751 is a deficient number, since it is larger than the sum of its proper divisors (9503430489).

28220105751 is a wasteful number, since it uses less digits than its factorization.

28220105751 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24182145.

The product of its (nonzero) digits is 11200, while the sum is 33.

The spelling of 28220105751 in words is "twenty-eight billion, two hundred twenty million, one hundred five thousand, seven hundred fifty-one".