258291894 has 64 divisors (see below), whose sum is σ = 615140352. Its totient is φ = 70761600.

The previous prime is 258291883. The next prime is 258291899. The reversal of 258291894 is 498192852.

It is a super-2 number, since 2×258291894² = 133429405012214472, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (258291899) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 109164 + ... + 111504.

It is an arithmetic number, because the mean of its divisors is an integer number (9611568).

Almost surely, 2^258291894 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 258291894, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (307570176).

258291894 is an abundant number, since it is smaller than the sum of its proper divisors (356848458).

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

258291894 is a wasteful number, since it uses less digits than its factorization.

258291894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2461.

The product of its digits is 414720, while the sum is 48.

The square root of 258291894 is about 16071.4620990126. The cubic root of 258291894 is about 636.8496663655.

The spelling of 258291894 in words is "two hundred fifty-eight million, two hundred ninety-one thousand, eight hundred ninety-four".