28304412267 has 8 divisors (see below), whose sum is σ = 38956610560. Its totient is φ = 18260911080.

The previous prime is 28304412229. The next prime is 28304412277. The reversal of 28304412267 is 76221440382.

It is a happy number.

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

It is not a de Polignac number, because 28304412267 - 2⁷ = 28304412139 is a prime.

It is a super-2 number, since 2×28304412267² (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 (28304412277) 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, 152174167 + ... + 152174352.

It is an arithmetic number, because the mean of its divisors is an integer number (4869576320).

Almost surely, 2^28304412267 is an apocalyptic number.

28304412267 is a deficient number, since it is larger than the sum of its proper divisors (10652198293).

28304412267 is a wasteful number, since it uses less digits than its factorization.

28304412267 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304348553.

The product of its (nonzero) digits is 129024, while the sum is 39.

The spelling of 28304412267 in words is "twenty-eight billion, three hundred four million, four hundred twelve thousand, two hundred sixty-seven".