258021012 has 48 divisors (see below), whose sum is σ = 609638400. Its totient is φ = 84930912.

The previous prime is 258020999. The next prime is 258021041. The reversal of 258021012 is 210120852.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 258021012.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 398473 + ... + 399119.

It is an arithmetic number, because the mean of its divisors is an integer number (12700800).

Almost surely, 2^258021012 is an apocalyptic number.

It is an amenable number.

258021012 is an abundant number, since it is smaller than the sum of its proper divisors (351617388).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

258021012 is a wasteful number, since it uses less digits than its factorization.

258021012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1020 (or 1018 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 21.

The square root of 258021012 is about 16063.0324658826. The cubic root of 258021012 is about 636.6269577980.

Adding to 258021012 its reverse (210120852), we get a palindrome (468141864).

The spelling of 258021012 in words is "two hundred fifty-eight million, twenty-one thousand, twelve".