28958017 has 8 divisors (see below), whose sum is σ = 31682880. Its totient is φ = 26248560.

The previous prime is 28957991. The next prime is 28958023. The reversal of 28958017 is 71085982.

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

It is a cyclic number.

It is not a de Polignac number, because 28958017 - 2¹⁵ = 28925249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28958057) 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, 283 + ... + 7615.

It is an arithmetic number, because the mean of its divisors is an integer number (3960360).

Almost surely, 2^28958017 is an apocalyptic number.

It is an amenable number.

28958017 is a deficient number, since it is larger than the sum of its proper divisors (2724863).

28958017 is a wasteful number, since it uses less digits than its factorization.

28958017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7703.

The product of its (nonzero) digits is 40320, while the sum is 40.

The square root of 28958017 is about 5381.2653716389. The cubic root of 28958017 is about 307.0833522573.

The spelling of 28958017 in words is "twenty-eight million, nine hundred fifty-eight thousand, seventeen".