28950647 has 8 divisors (see below), whose sum is σ = 31629072. Its totient is φ = 26280000.

The previous prime is 28950641. The next prime is 28950697. The reversal of 28950647 is 74605982.

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 28950647 - 2⁴ = 28950631 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 (28950641) 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, 8147 + ... + 11147.

It is an arithmetic number, because the mean of its divisors is an integer number (3953634).

Almost surely, 2^28950647 is an apocalyptic number.

28950647 is a deficient number, since it is larger than the sum of its proper divisors (2678425).

28950647 is a wasteful number, since it uses less digits than its factorization.

28950647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3889.

The product of its (nonzero) digits is 120960, while the sum is 41.

The square root of 28950647 is about 5380.5805448855. The cubic root of 28950647 is about 307.0572984897.

The spelling of 28950647 in words is "twenty-eight million, nine hundred fifty thousand, six hundred forty-seven".