78040194 has 8 divisors (see below), whose sum is σ = 156080400. Its totient is φ = 26013396.

The previous prime is 78040177. The next prime is 78040211. The reversal of 78040194 is 49104087.

It is an interprime number because it is at equal distance from previous prime (78040177) and next prime (78040211).

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

78040194 is an admirable number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6503344 + ... + 6503355.

It is an arithmetic number, because the mean of its divisors is an integer number (19510050).

Almost surely, 2^78040194 is an apocalyptic number.

78040194 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.

78040194 is a wasteful number, since it uses less digits than its factorization.

78040194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13006704.

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 78040194 is about 8834.0361104084. The cubic root of 78040194 is about 427.3392466966.

The spelling of 78040194 in words is "seventy-eight million, forty thousand, one hundred ninety-four".