78457027 has 8 divisors (see below), whose sum is σ = 85655232. Its totient is φ = 71269800.

The previous prime is 78457019. The next prime is 78457031. The reversal of 78457027 is 72075487.

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

It is a cyclic number.

It is not a de Polignac number, because 78457027 - 2³ = 78457019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78457007) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21768 + ... + 25114.

It is an arithmetic number, because the mean of its divisors is an integer number (10706904).

Almost surely, 2^78457027 is an apocalyptic number.

78457027 is a deficient number, since it is larger than the sum of its proper divisors (7198205).

78457027 is a wasteful number, since it uses less digits than its factorization.

78457027 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5489.

The product of its (nonzero) digits is 109760, while the sum is 40.

The square root of 78457027 is about 8857.5971346636. The cubic root of 78457027 is about 428.0987394836.

The spelling of 78457027 in words is "seventy-eight million, four hundred fifty-seven thousand, twenty-seven".