28882271 has 8 divisors (see below), whose sum is σ = 31584384. Its totient is φ = 26192920.

The previous prime is 28882267. The next prime is 28882277. The reversal of 28882271 is 17228882.

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 28882271 - 2² = 28882267 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 (28882277) 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, 1910 + ... + 7836.

It is an arithmetic number, because the mean of its divisors is an integer number (3948048).

Almost surely, 2^28882271 is an apocalyptic number.

28882271 is a deficient number, since it is larger than the sum of its proper divisors (2702113).

28882271 is a wasteful number, since it uses less digits than its factorization.

28882271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6381.

The product of its digits is 28672, while the sum is 38.

The square root of 28882271 is about 5374.2228275352. Note that the first 3 decimals coincide. The cubic root of 28882271 is about 306.8153706715.

The spelling of 28882271 in words is "twenty-eight million, eight hundred eighty-two thousand, two hundred seventy-one".