258672018 has 32 divisors (see below), whose sum is σ = 566452800. Its totient is φ = 78096960.

The previous prime is 258671981. The next prime is 258672019. The reversal of 258672018 is 810276852.

258672018 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×258672018² = 133822425792384648, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (258672019) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11208 + ... + 25356.

It is an arithmetic number, because the mean of its divisors is an integer number (17701650).

Almost surely, 2^258672018 is an apocalyptic number.

258672018 is an abundant number, since it is smaller than the sum of its proper divisors (307780782).

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

258672018 is a wasteful number, since it uses less digits than its factorization.

258672018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14442.

The product of its (nonzero) digits is 53760, while the sum is 39.

The square root of 258672018 is about 16083.2838064868. The cubic root of 258672018 is about 637.1619270148.

It can be divided in two parts, 258 and 672018, that added together give a palindrome (672276).

The spelling of 258672018 in words is "two hundred fifty-eight million, six hundred seventy-two thousand, eighteen".