28889441 has 8 divisors (see below), whose sum is σ = 33098304. Its totient is φ = 24701040.

The previous prime is 28889411. The next prime is 28889453. The reversal of 28889441 is 14498882.

It is a happy number.

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

It is not a de Polignac number, because 28889441 - 2¹⁴ = 28873057 is a prime.

It is a super-3 number, since 3×28889441³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 28889392 and 28889401.

It is not an unprimeable number, because it can be changed into a prime (28889411) 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, 1955 + ... + 7848.

It is an arithmetic number, because the mean of its divisors is an integer number (4137288).

Almost surely, 2^28889441 is an apocalyptic number.

It is an amenable number.

28889441 is a deficient number, since it is larger than the sum of its proper divisors (4208863).

28889441 is an equidigital number, since it uses as much as digits as its factorization.

28889441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10231.

The product of its digits is 147456, while the sum is 44.

The square root of 28889441 is about 5374.8898593367. The cubic root of 28889441 is about 306.8407574586.

The spelling of 28889441 in words is "twenty-eight million, eight hundred eighty-nine thousand, four hundred forty-one".