28742223275 has 6 divisors (see below), whose sum is σ = 35640356892. Its totient is φ = 22993778600.

The previous prime is 28742223253. The next prime is 28742223277. The reversal of 28742223275 is 57232224782.

It is not a de Polignac number, because 28742223275 - 2³⁴ = 11562354091 is a prime.

It is a super-2 number, since 2×28742223275² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28742223277) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 574844441 + ... + 574844490.

It is an arithmetic number, because the mean of its divisors is an integer number (5940059482).

Almost surely, 2^28742223275 is an apocalyptic number.

28742223275 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

28742223275 is a deficient number, since it is larger than the sum of its proper divisors (6898133617).

28742223275 is a wasteful number, since it uses less digits than its factorization.

28742223275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1149688941 (or 1149688936 counting only the distinct ones).

The product of its digits is 752640, while the sum is 44.

The spelling of 28742223275 in words is "twenty-eight billion, seven hundred forty-two million, two hundred twenty-three thousand, two hundred seventy-five".