258994530 has 128 divisors (see below), whose sum is σ = 712857600. Its totient is φ = 66889152.

The previous prime is 258994523. The next prime is 258994537. The reversal of 258994530 is 35499852.

258994530 is a `hidden beast` number, since 25 + 8 + 9 + 94 + 530 = 666.

It is an interprime number because it is at equal distance from previous prime (258994523) and next prime (258994537).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (258994537) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1863201 + ... + 1863339.

It is an arithmetic number, because the mean of its divisors is an integer number (5569200).

Almost surely, 2^258994530 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 258994530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (356428800).

258994530 is an abundant number, since it is smaller than the sum of its proper divisors (453863070).

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

258994530 is a wasteful number, since it uses less digits than its factorization.

258994530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 325 (or 319 counting only the distinct ones).

The product of its (nonzero) digits is 388800, while the sum is 45.

The square root of 258994530 is about 16093.3069939028. The cubic root of 258994530 is about 637.4266213119.

The spelling of 258994530 in words is "two hundred fifty-eight million, nine hundred ninety-four thousand, five hundred thirty".