78414147 has 24 divisors (see below), whose sum is σ = 129748320. Its totient is φ = 44703360.

The previous prime is 78414139. The next prime is 78414151. The reversal of 78414147 is 74141487.

It is not a de Polignac number, because 78414147 - 2³ = 78414139 is a prime.

It is a super-2 number, since 2×78414147² = 12297556899475218, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78414647) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 31629 + ... + 34017.

It is an arithmetic number, because the mean of its divisors is an integer number (5406180).

Almost surely, 2^78414147 is an apocalyptic number.

78414147 is a deficient number, since it is larger than the sum of its proper divisors (51334173).

78414147 is a wasteful number, since it uses less digits than its factorization.

78414147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2923 (or 2920 counting only the distinct ones).

The product of its digits is 25088, while the sum is 36.

The square root of 78414147 is about 8855.1762828303. The cubic root of 78414147 is about 428.0207340670.

The spelling of 78414147 in words is "seventy-eight million, four hundred fourteen thousand, one hundred forty-seven".