258640116 has 24 divisors (see below), whose sum is σ = 689707200. Its totient is φ = 73897152.

The previous prime is 258640111. The next prime is 258640127. The reversal of 258640116 is 611046852.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (258640111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1539441 + ... + 1539608.

It is an arithmetic number, because the mean of its divisors is an integer number (28737800).

Almost surely, 2^258640116 is an apocalyptic number.

It is an amenable number.

258640116 is an abundant number, since it is smaller than the sum of its proper divisors (431067084).

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

258640116 is a wasteful number, since it uses less digits than its factorization.

258640116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3079063 (or 3079061 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 258640116 is about 16082.2920008312. The cubic root of 258640116 is about 637.1357322275.

Adding to 258640116 its reverse (611046852), we get a palindrome (869686968).

The spelling of 258640116 in words is "two hundred fifty-eight million, six hundred forty thousand, one hundred sixteen".