28847319 has 8 divisors (see below), whose sum is σ = 39037440. Its totient is φ = 18944376.

The previous prime is 28847311. The next prime is 28847353. The reversal of 28847319 is 91374882.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 28847319 - 2³ = 28847311 is a prime.

It is a super-2 number, since 2×28847319² = 1664335626975522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28847311) 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, 71559 + ... + 71960.

It is an arithmetic number, because the mean of its divisors is an integer number (4879680).

Almost surely, 2^28847319 is an apocalyptic number.

28847319 is a deficient number, since it is larger than the sum of its proper divisors (10190121).

28847319 is a wasteful number, since it uses less digits than its factorization.

28847319 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143589.

The product of its digits is 96768, while the sum is 42.

The square root of 28847319 is about 5370.9700241204. The cubic root of 28847319 is about 306.6915560822.

It can be divided in two parts, 2 and 8847319, that added together give a triangular number (8847321 = T₄₂₀₆).

The spelling of 28847319 in words is "twenty-eight million, eight hundred forty-seven thousand, three hundred nineteen".