78740734 has 8 divisors (see below), whose sum is σ = 118627560. Its totient is φ = 39198216.

The previous prime is 78740729. The next prime is 78740737. The reversal of 78740734 is 43704787.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78740737) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85504 + ... + 86419.

It is an arithmetic number, because the mean of its divisors is an integer number (14828445).

Almost surely, 2^78740734 is an apocalyptic number.

78740734 is a deficient number, since it is larger than the sum of its proper divisors (39886826).

78740734 is a wasteful number, since it uses less digits than its factorization.

78740734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172154.

The product of its (nonzero) digits is 131712, while the sum is 40.

The square root of 78740734 is about 8873.5975793361. The cubic root of 78740734 is about 428.6141320517.

The spelling of 78740734 in words is "seventy-eight million, seven hundred forty thousand, seven hundred thirty-four".