258374844 has 216 divisors, whose sum is σ = 862701840. Its totient is φ = 64447488.

The previous prime is 258374777. The next prime is 258374849. The reversal of 258374844 is 448473852.

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 258374844.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (258374849) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 435412 + ... + 436004.

It is an arithmetic number, because the mean of its divisors is an integer number (3993990).

Almost surely, 2^258374844 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 258374844, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (431350920).

258374844 is an abundant number, since it is smaller than the sum of its proper divisors (604326996).

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

258374844 is a wasteful number, since it uses less digits than its factorization.

258374844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 649 (or 637 counting only the distinct ones).

The product of its digits is 860160, while the sum is 45.

The square root of 258374844 is about 16074.0425531352. The cubic root of 258374844 is about 636.9178334625.

The spelling of 258374844 in words is "two hundred fifty-eight million, three hundred seventy-four thousand, eight hundred forty-four".