28472227 has 8 divisors (see below), whose sum is σ = 32631296. Its totient is φ = 24336072.

The previous prime is 28472219. The next prime is 28472273. The reversal of 28472227 is 72227482.

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 28472227 - 2³ = 28472219 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28472192 and 28472201.

It is not an unprimeable number, because it can be changed into a prime (28472027) 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, 2973 + ... + 8110.

It is an arithmetic number, because the mean of its divisors is an integer number (4078912).

Almost surely, 2^28472227 is an apocalyptic number.

28472227 is a deficient number, since it is larger than the sum of its proper divisors (4159069).

28472227 is a wasteful number, since it uses less digits than its factorization.

28472227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11457.

The product of its digits is 25088, while the sum is 34.

The square root of 28472227 is about 5335.9373122255. The cubic root of 28472227 is about 305.3564836548.

The spelling of 28472227 in words is "twenty-eight million, four hundred seventy-two thousand, two hundred twenty-seven".