258078258 has 32 divisors (see below), whose sum is σ = 607245120. Its totient is φ = 80965440.

The previous prime is 258078257. The next prime is 258078277. The reversal of 258078258 is 852870852.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (258078257) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 139648 + ... + 141483.

It is an arithmetic number, because the mean of its divisors is an integer number (18976410).

Almost surely, 2^258078258 is an apocalyptic number.

258078258 is an abundant number, since it is smaller than the sum of its proper divisors (349166862).

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

258078258 is a wasteful number, since it uses less digits than its factorization.

258078258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281159 (or 281153 counting only the distinct ones).

The product of its (nonzero) digits is 358400, while the sum is 45.

The square root of 258078258 is about 16064.8142846408. The cubic root of 258078258 is about 636.6740362015.

The spelling of 258078258 in words is "two hundred fifty-eight million, seventy-eight thousand, two hundred fifty-eight".