71678012 has 24 divisors (see below), whose sum is σ = 143969280. Its totient is φ = 30587760.

The previous prime is 71678011. The next prime is 71678017. The reversal of 71678012 is 21087617.

It is a self number, because there is not a number n which added to its sum of digits gives 71678012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71678011) 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, 1337 + ... + 12047.

It is an arithmetic number, because the mean of its divisors is an integer number (5998720).

Almost surely, 2^71678012 is an apocalyptic number.

It is an amenable number.

71678012 is an abundant number, since it is smaller than the sum of its proper divisors (72291268).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

71678012 is a wasteful number, since it uses less digits than its factorization.

71678012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10961 (or 10959 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 32.

The square root of 71678012 is about 8466.2867893782. The cubic root of 71678012 is about 415.3956878305.

The spelling of 71678012 in words is "seventy-one million, six hundred seventy-eight thousand, twelve".