258135428 has 12 divisors (see below), whose sum is σ = 453538512. Its totient is φ = 128553000.

The previous prime is 258135413. The next prime is 258135431. The reversal of 258135428 is 824531852.

258135428 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 258135391 and 258135400.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 127550 + ... + 129557.

It is an arithmetic number, because the mean of its divisors is an integer number (37794876).

Almost surely, 2^258135428 is an apocalyptic number.

It is an amenable number.

258135428 is a deficient number, since it is larger than the sum of its proper divisors (195403084).

258135428 is a wasteful number, since it uses less digits than its factorization.

258135428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257362 (or 257360 counting only the distinct ones).

The product of its digits is 76800, while the sum is 38.

The square root of 258135428 is about 16066.5935406358. The cubic root of 258135428 is about 636.7210451560.

The spelling of 258135428 in words is "two hundred fifty-eight million, one hundred thirty-five thousand, four hundred twenty-eight".