78430027 has 12 divisors (see below), whose sum is σ = 89926200. Its totient is φ = 68135808.

The previous prime is 78430021. The next prime is 78430039. The reversal of 78430027 is 72003487.

78430027 = 964² + 965² + ... + 1041².

It is not a de Polignac number, because 78430027 - 2¹⁵ = 78397259 is a prime.

It is not an unprimeable number, because it can be changed into a prime (78430021) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10777 + ... + 16522.

It is an arithmetic number, because the mean of its divisors is an integer number (7493850).

Almost surely, 2^78430027 is an apocalyptic number.

78430027 is a deficient number, since it is larger than the sum of its proper divisors (11496173).

78430027 is a wasteful number, since it uses less digits than its factorization.

78430027 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27342 (or 27329 counting only the distinct ones).

The product of its (nonzero) digits is 9408, while the sum is 31.

The square root of 78430027 is about 8856.0728881373. The cubic root of 78430027 is about 428.0496255819.

The spelling of 78430027 in words is "seventy-eight million, four hundred thirty thousand, twenty-seven".