258028534 has 4 divisors (see below), whose sum is σ = 387042804. Its totient is φ = 129014266.

The previous prime is 258028523. The next prime is 258028583. The reversal of 258028534 is 435820852.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 258028493 and 258028502.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64507132 + ... + 64507135.

It is an arithmetic number, because the mean of its divisors is an integer number (96760701).

Almost surely, 2^258028534 is an apocalyptic number.

258028534 is a deficient number, since it is larger than the sum of its proper divisors (129014270).

258028534 is a wasteful number, since it uses less digits than its factorization.

258028534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129014269.

The product of its (nonzero) digits is 76800, while the sum is 37.

The square root of 258028534 is about 16063.2666042745. The cubic root of 258028534 is about 636.6331441953.

The spelling of 258028534 in words is "two hundred fifty-eight million, twenty-eight thousand, five hundred thirty-four".