78071232 has 56 divisors (see below), whose sum is σ = 208026000. Its totient is φ = 25839616.

The previous prime is 78071207. The next prime is 78071239. The reversal of 78071232 is 23217087.

It is a self number, because there is not a number n which added to its sum of digits gives 78071232.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78071239) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 27244 + ... + 29972.

It is an arithmetic number, because the mean of its divisors is an integer number (3714750).

Almost surely, 2^78071232 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 78071232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (104013000).

78071232 is an abundant number, since it is smaller than the sum of its proper divisors (129954768).

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

78071232 is a wasteful number, since it uses less digits than its factorization.

78071232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2893 (or 2883 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 30.

The square root of 78071232 is about 8835.7926639323. The cubic root of 78071232 is about 427.3958927095.

The spelling of 78071232 in words is "seventy-eight million, seventy-one thousand, two hundred thirty-two".