78081258 has 8 divisors (see below), whose sum is σ = 156162528. Its totient is φ = 26027084.

The previous prime is 78081257. The next prime is 78081271. The reversal of 78081258 is 85218087.

It is a sphenic number, since it is the product of 3 distinct primes.

78081258 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (78081257) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6506766 + ... + 6506777.

It is an arithmetic number, because the mean of its divisors is an integer number (19520316).

Almost surely, 2^78081258 is an apocalyptic number.

78081258 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

78081258 is a wasteful number, since it uses less digits than its factorization.

78081258 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13013548.

The product of its (nonzero) digits is 35840, while the sum is 39.

The square root of 78081258 is about 8836.3599971934. The cubic root of 78081258 is about 427.4141874885.

The spelling of 78081258 in words is "seventy-eight million, eighty-one thousand, two hundred fifty-eight".