28958385 has 16 divisors (see below), whose sum is σ = 47931840. Its totient is φ = 14911680.

The previous prime is 28958353. The next prime is 28958387. The reversal of 28958385 is 58385982.

It is not a de Polignac number, because 28958385 - 2⁵ = 28958353 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28958387) 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, 32851 + ... + 33720.

It is an arithmetic number, because the mean of its divisors is an integer number (2995740).

Almost surely, 2^28958385 is an apocalyptic number.

It is an amenable number.

28958385 is a deficient number, since it is larger than the sum of its proper divisors (18973455).

28958385 is a wasteful number, since it uses less digits than its factorization.

28958385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66608.

The product of its digits is 691200, while the sum is 48.

The square root of 28958385 is about 5381.2995642317. The cubic root of 28958385 is about 307.0846530622.

The spelling of 28958385 in words is "twenty-eight million, nine hundred fifty-eight thousand, three hundred eighty-five".