28232340069 has 4 divisors (see below), whose sum is σ = 37643120096. Its totient is φ = 18821560044.

The previous prime is 28232340061. The next prime is 28232340091. The reversal of 28232340069 is 96004323282.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 28232340069 - 2³ = 28232340061 is a prime.

It is a super-2 number, since 2×28232340069² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28232340061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4705390009 + ... + 4705390014.

It is an arithmetic number, because the mean of its divisors is an integer number (9410780024).

Almost surely, 2^28232340069 is an apocalyptic number.

It is an amenable number.

28232340069 is a deficient number, since it is larger than the sum of its proper divisors (9410780027).

28232340069 is an equidigital number, since it uses as much as digits as its factorization.

28232340069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9410780026.

The product of its (nonzero) digits is 124416, while the sum is 39.

The spelling of 28232340069 in words is "twenty-eight billion, two hundred thirty-two million, three hundred forty thousand, sixty-nine".