258440622 has 48 divisors (see below), whose sum is σ = 595164672. Its totient is φ = 74186640.

The previous prime is 258440593. The next prime is 258440629. The reversal of 258440622 is 226044852.

It is a super-4 number, since 4×258440622⁴ (a number of 35 digits) contains 4444 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (258440629) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18403 + ... + 29249.

It is an arithmetic number, because the mean of its divisors is an integer number (12399264).

Almost surely, 2^258440622 is an apocalyptic number.

258440622 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 258440622, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (297582336).

258440622 is an abundant number, since it is smaller than the sum of its proper divisors (336724050).

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

258440622 is a wasteful number, since it uses less digits than its factorization.

258440622 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10901 (or 10882 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 33.

The square root of 258440622 is about 16076.0885168003. The cubic root of 258440622 is about 636.9718784898.

The spelling of 258440622 in words is "two hundred fifty-eight million, four hundred forty thousand, six hundred twenty-two".