28958135 has 12 divisors (see below), whose sum is σ = 35655048. Its totient is φ = 22566096.

The previous prime is 28958129. The next prime is 28958201. The reversal of 28958135 is 53185982.

It is not a de Polignac number, because 28958135 - 2⁸ = 28957879 is a prime.

It is a super-3 number, since 3×28958135³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28958092 and 28958101.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 78722 + ... + 79088.

It is an arithmetic number, because the mean of its divisors is an integer number (2971254).

Almost surely, 2^28958135 is an apocalyptic number.

28958135 is a deficient number, since it is larger than the sum of its proper divisors (6696913).

28958135 is an frugal number, since it uses more digits than its factorization.

28958135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 782 (or 415 counting only the distinct ones).

The product of its digits is 86400, while the sum is 41.

The square root of 28958135 is about 5381.2763355918. The cubic root of 28958135 is about 307.0837693644.

The spelling of 28958135 in words is "twenty-eight million, nine hundred fifty-eight thousand, one hundred thirty-five".