78430084 has 12 divisors (see below), whose sum is σ = 140962444. Its totient is φ = 38155104.

The previous prime is 78430073. The next prime is 78430109. The reversal of 78430084 is 48003487.

It can be written as a sum of positive squares in 2 ways, for example, as 71876484 + 6553600 = 8478^2 + 2560^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 264819 + ... + 265114.

Almost surely, 2^78430084 is an apocalyptic number.

78430084 is a gapful number since it is divisible by the number (74) formed by its first and last digit.

It is an amenable number.

78430084 is a deficient number, since it is larger than the sum of its proper divisors (62532360).

78430084 is a wasteful number, since it uses less digits than its factorization.

78430084 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 529974 (or 529972 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 34.

The square root of 78430084 is about 8856.0761062674. The cubic root of 78430084 is about 428.0497292787.

The spelling of 78430084 in words is "seventy-eight million, four hundred thirty thousand, eighty-four".