28550347 has 8 divisors (see below), whose sum is σ = 33511136. Its totient is φ = 23810112.

The previous prime is 28550339. The next prime is 28550351. The reversal of 28550347 is 74305582.

It is a happy number.

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 28550347 - 2³ = 28550339 is a prime.

It is a pancake number, because a pancake can be divided into 28550347 parts by 7556 straight cuts.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28550317) 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, 54858 + ... + 55375.

It is an arithmetic number, because the mean of its divisors is an integer number (4188892).

Almost surely, 2^28550347 is an apocalyptic number.

28550347 is a deficient number, since it is larger than the sum of its proper divisors (4960789).

28550347 is a wasteful number, since it uses less digits than its factorization.

28550347 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110277.

The product of its (nonzero) digits is 33600, while the sum is 34.

The square root of 28550347 is about 5343.2524739151. The cubic root of 28550347 is about 305.6355001738.

The spelling of 28550347 in words is "twenty-eight million, five hundred fifty thousand, three hundred forty-seven".