28219093 has 8 divisors (see below), whose sum is σ = 32345600. Its totient is φ = 24116400.

The previous prime is 28219073. The next prime is 28219153. The reversal of 28219093 is 39091282.

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

It is a de Polignac number, because none of the positive numbers 2^k-28219093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28219033) 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, 3333 + ... + 8218.

It is an arithmetic number, because the mean of its divisors is an integer number (4043200).

Almost surely, 2^28219093 is an apocalyptic number.

It is an amenable number.

28219093 is a deficient number, since it is larger than the sum of its proper divisors (4126507).

28219093 is a wasteful number, since it uses less digits than its factorization.

28219093 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11907.

The product of its (nonzero) digits is 7776, while the sum is 34.

The square root of 28219093 is about 5312.1646247081. The cubic root of 28219093 is about 304.4488586579.

The spelling of 28219093 in words is "twenty-eight million, two hundred nineteen thousand, ninety-three".