78467712 has 64 divisors (see below), whose sum is σ = 210201600. Its totient is φ = 25933824.

The previous prime is 78467687. The next prime is 78467731. The reversal of 78467712 is 21776487.

It is a tau number, because it is divible by the number of its divisors (64).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47964 + ... + 49572.

It is an arithmetic number, because the mean of its divisors is an integer number (3284400).

Almost surely, 2^78467712 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78467712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (105100800).

78467712 is an abundant number, since it is smaller than the sum of its proper divisors (131733888).

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

78467712 is a wasteful number, since it uses less digits than its factorization.

78467712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1753 (or 1741 counting only the distinct ones).

The product of its digits is 131712, while the sum is 42.

The square root of 78467712 is about 8858.2002686776. The cubic root of 78467712 is about 428.1181727435.

The spelling of 78467712 in words is "seventy-eight million, four hundred sixty-seven thousand, seven hundred twelve".