28889746 has 8 divisors (see below), whose sum is σ = 43369344. Its totient is φ = 14433300.

The previous prime is 28889743. The next prime is 28889767. The reversal of 28889746 is 64798882.

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

It is a junction number, because it is equal to n+sod(n) for n = 28889693 and 28889702.

It is not an unprimeable number, because it can be changed into a prime (28889743) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2230 + ... + 7921.

It is an arithmetic number, because the mean of its divisors is an integer number (5421168).

Almost surely, 2^28889746 is an apocalyptic number.

28889746 is a deficient number, since it is larger than the sum of its proper divisors (14479598).

28889746 is a wasteful number, since it uses less digits than its factorization.

28889746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11576.

The product of its digits is 1548288, while the sum is 52.

The square root of 28889746 is about 5374.9182319362. The cubic root of 28889746 is about 306.8418372776.

The spelling of 28889746 in words is "twenty-eight million, eight hundred eighty-nine thousand, seven hundred forty-six".