78783672 has 64 divisors (see below), whose sum is σ = 216950400. Its totient is φ = 23642240.

The previous prime is 78783667. The next prime is 78783701. The reversal of 78783672 is 27638787.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26854 + ... + 29642.

It is an arithmetic number, because the mean of its divisors is an integer number (3389850).

Almost surely, 2^78783672 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 78783672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (108475200).

78783672 is an abundant number, since it is smaller than the sum of its proper divisors (138166728).

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

78783672 is a wasteful number, since it uses less digits than its factorization.

78783672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2916 (or 2912 counting only the distinct ones).

The product of its digits is 790272, while the sum is 48.

The square root of 78783672 is about 8876.0166741619. The cubic root of 78783672 is about 428.6920268863.

The spelling of 78783672 in words is "seventy-eight million, seven hundred eighty-three thousand, six hundred seventy-two".