258478078 has 16 divisors (see below), whose sum is σ = 398974464. Its totient is φ = 125500320.

The previous prime is 258478069. The next prime is 258478079. The reversal of 258478078 is 870874852.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (258478079) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38083 + ... + 44353.

It is an arithmetic number, because the mean of its divisors is an integer number (24935904).

Almost surely, 2^258478078 is an apocalyptic number.

258478078 is a deficient number, since it is larger than the sum of its proper divisors (140496386).

258478078 is a wasteful number, since it uses less digits than its factorization.

258478078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6867.

The product of its (nonzero) digits is 1003520, while the sum is 49.

The square root of 258478078 is about 16077.2534345889. The cubic root of 258478078 is about 637.0026492796.

The spelling of 258478078 in words is "two hundred fifty-eight million, four hundred seventy-eight thousand, seventy-eight".