28888743 has 8 divisors (see below), whose sum is σ = 41481328. Its totient is φ = 17777664.

The previous prime is 28888681. The next prime is 28888747. The reversal of 28888743 is 34788882.

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

It is not a de Polignac number, because 28888743 - 2⁸ = 28888487 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28888692 and 28888701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28888747) 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, 370330 + ... + 370407.

It is an arithmetic number, because the mean of its divisors is an integer number (5185166).

Almost surely, 2^28888743 is an apocalyptic number.

28888743 is a deficient number, since it is larger than the sum of its proper divisors (12592585).

28888743 is a wasteful number, since it uses less digits than its factorization.

28888743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 740753.

The product of its digits is 688128, while the sum is 48.

The square root of 28888743 is about 5374.8249273814. The cubic root of 28888743 is about 306.8382862377.

The spelling of 28888743 in words is "twenty-eight million, eight hundred eighty-eight thousand, seven hundred forty-three".