78304671 has 16 divisors (see below), whose sum is σ = 116143200. Its totient is φ = 52141824.

The previous prime is 78304661. The next prime is 78304697. The reversal of 78304671 is 17640387.

It is not a de Polignac number, because 78304671 - 2¹⁰ = 78303647 is a prime.

It is a super-2 number, since 2×78304671² = 12263243000836482, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78304621) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44965 + ... + 46673.

It is an arithmetic number, because the mean of its divisors is an integer number (7258950).

Almost surely, 2^78304671 is an apocalyptic number.

78304671 is a deficient number, since it is larger than the sum of its proper divisors (37838529).

78304671 is a wasteful number, since it uses less digits than its factorization.

78304671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3415 (or 3409 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 36.

The square root of 78304671 is about 8848.9926545342. The cubic root of 78304671 is about 427.8214510585.

The spelling of 78304671 in words is "seventy-eight million, three hundred four thousand, six hundred seventy-one".