78071493 has 8 divisors (see below), whose sum is σ = 104464288. Its totient is φ = 51863184.

The previous prime is 78071489. The next prime is 78071507. The reversal of 78071493 is 39417087.

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

It is not a de Polignac number, because 78071493 - 2² = 78071489 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78071473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45130 + ... + 46827.

It is an arithmetic number, because the mean of its divisors is an integer number (13058036).

Almost surely, 2^78071493 is an apocalyptic number.

It is an amenable number.

78071493 is a deficient number, since it is larger than the sum of its proper divisors (26392795).

78071493 is a wasteful number, since it uses less digits than its factorization.

78071493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92243.

The product of its (nonzero) digits is 42336, while the sum is 39.

The square root of 78071493 is about 8835.8074333928. The cubic root of 78071493 is about 427.3963689848.

The spelling of 78071493 in words is "seventy-eight million, seventy-one thousand, four hundred ninety-three".