28229409647 has 8 divisors (see below), whose sum is σ = 28338526944. Its totient is φ = 28120457728.

The previous prime is 28229409613. The next prime is 28229409671. The reversal of 28229409647 is 74690492282.

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

It is a cyclic number.

It is not a de Polignac number, because 28229409647 - 2³² = 23934442351 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28229409547) 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, 306323 + ... + 387675.

It is an arithmetic number, because the mean of its divisors is an integer number (3542315868).

Almost surely, 2^28229409647 is an apocalyptic number.

28229409647 is a deficient number, since it is larger than the sum of its proper divisors (109117297).

28229409647 is an equidigital number, since it uses as much as digits as its factorization.

28229409647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82689.

The product of its (nonzero) digits is 3483648, while the sum is 53.

The spelling of 28229409647 in words is "twenty-eight billion, two hundred twenty-nine million, four hundred nine thousand, six hundred forty-seven".