258891402 has 144 divisors (see below), whose sum is σ = 700519968. Its totient is φ = 63060480.

The previous prime is 258891401. The next prime is 258891407. The reversal of 258891402 is 204198852.

It is not an unprimeable number, because it can be changed into a prime (258891401) by changing a digit.

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 in 71 ways as a sum of consecutive naturals, for example, 934488 + ... + 934764.

It is an arithmetic number, because the mean of its divisors is an integer number (4864722).

Almost surely, 2^258891402 is an apocalyptic number.

258891402 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 258891402, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (350259984).

258891402 is an abundant number, since it is smaller than the sum of its proper divisors (441628566).

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

258891402 is a wasteful number, since it uses less digits than its factorization.

258891402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 341 (or 317 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 39.

The square root of 258891402 is about 16090.1026099898. The cubic root of 258891402 is about 637.3420052911.

The spelling of 258891402 in words is "two hundred fifty-eight million, eight hundred ninety-one thousand, four hundred two".