78740058 has 8 divisors (see below), whose sum is σ = 157480128. Its totient is φ = 26246684.

The previous prime is 78740029. The next prime is 78740059. The reversal of 78740058 is 85004787.

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

78740058 is an admirable number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 78739998 and 78740025.

It is not an unprimeable number, because it can be changed into a prime (78740059) 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, 6561666 + ... + 6561677.

It is an arithmetic number, because the mean of its divisors is an integer number (19685016).

Almost surely, 2^78740058 is an apocalyptic number.

78740058 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.

78740058 is a wasteful number, since it uses less digits than its factorization.

78740058 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13123348.

The product of its (nonzero) digits is 62720, while the sum is 39.

The square root of 78740058 is about 8873.5594887283. The cubic root of 78740058 is about 428.6129054778.

The spelling of 78740058 in words is "seventy-eight million, seven hundred forty thousand, fifty-eight".