28889601 has 16 divisors (see below), whose sum is σ = 41793024. Its totient is φ = 17645184.

The previous prime is 28889599. The next prime is 28889617. The reversal of 28889601 is 10698882.

It is not a de Polignac number, because 28889601 - 2¹ = 28889599 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (28889501) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2640 + ... + 8046.

It is an arithmetic number, because the mean of its divisors is an integer number (2612064).

Almost surely, 2^28889601 is an apocalyptic number.

It is an amenable number.

28889601 is a deficient number, since it is larger than the sum of its proper divisors (12903423).

28889601 is a wasteful number, since it uses less digits than its factorization.

28889601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5560.

The product of its (nonzero) digits is 55296, while the sum is 42.

The square root of 28889601 is about 5374.9047433420. The cubic root of 28889601 is about 306.8413239220.

The spelling of 28889601 in words is "twenty-eight million, eight hundred eighty-nine thousand, six hundred one".