28412647647 has 8 divisors (see below), whose sum is σ = 37897724160. Its totient is φ = 18934668120.

The previous prime is 28412647619. The next prime is 28412647657. The reversal of 28412647647 is 74674621482.

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 28412647647 - 2¹² = 28412643551 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28412647647.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28412647607) 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, 1764897 + ... + 1780922.

It is an arithmetic number, because the mean of its divisors is an integer number (4737215520).

Almost surely, 2^28412647647 is an apocalyptic number.

28412647647 is a deficient number, since it is larger than the sum of its proper divisors (9485076513).

28412647647 is a wasteful number, since it uses less digits than its factorization.

28412647647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3548493.

The product of its digits is 3612672, while the sum is 51.

The spelling of 28412647647 in words is "twenty-eight billion, four hundred twelve million, six hundred forty-seven thousand, six hundred forty-seven".