28558145 has 16 divisors (see below), whose sum is σ = 42726528. Its totient is φ = 17802240.

The previous prime is 28558139. The next prime is 28558163. The reversal of 28558145 is 54185582.

It is not a de Polignac number, because 28558145 - 2¹² = 28554049 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28558099 and 28558108.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36704 + ... + 37473.

It is an arithmetic number, because the mean of its divisors is an integer number (2670408).

Almost surely, 2^28558145 is an apocalyptic number.

It is an amenable number.

28558145 is a deficient number, since it is larger than the sum of its proper divisors (14168383).

28558145 is a wasteful number, since it uses less digits than its factorization.

28558145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74200.

The product of its digits is 64000, while the sum is 38.

The square root of 28558145 is about 5343.9821294611. The cubic root of 28558145 is about 305.6633238716.

The spelling of 28558145 in words is "twenty-eight million, five hundred fifty-eight thousand, one hundred forty-five".