258261878 has 32 divisors (see below), whose sum is σ = 460468800. Its totient is φ = 106291584.

The previous prime is 258261877. The next prime is 258261919. The reversal of 258261878 is 878162852.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (258261877) 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, 78368 + ... + 81596.

It is an arithmetic number, because the mean of its divisors is an integer number (14389650).

Almost surely, 2^258261878 is an apocalyptic number.

258261878 is a deficient number, since it is larger than the sum of its proper divisors (202206922).

258261878 is a wasteful number, since it uses less digits than its factorization.

258261878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3464.

The product of its digits is 430080, while the sum is 47.

The square root of 258261878 is about 16070.5282427181. The cubic root of 258261878 is about 636.8249960596.

The spelling of 258261878 in words is "two hundred fifty-eight million, two hundred sixty-one thousand, eight hundred seventy-eight".