28572271 has 8 divisors (see below), whose sum is σ = 35165984. Its totient is φ = 22606560.

The previous prime is 28572259. The next prime is 28572301. The reversal of 28572271 is 17227582.

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 28572271 - 2⁵ = 28572239 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28572571) 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, 156900 + ... + 157081.

It is an arithmetic number, because the mean of its divisors is an integer number (4395748).

Almost surely, 2^28572271 is an apocalyptic number.

28572271 is a deficient number, since it is larger than the sum of its proper divisors (6593713).

28572271 is a wasteful number, since it uses less digits than its factorization.

28572271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314001.

The product of its digits is 15680, while the sum is 34.

The square root of 28572271 is about 5345.3036396448. The cubic root of 28572271 is about 305.7137133301.

The spelling of 28572271 in words is "twenty-eight million, five hundred seventy-two thousand, two hundred seventy-one".