78578232 has 64 divisors (see below), whose sum is σ = 203886720. Its totient is φ = 25216128.

The previous prime is 78578221. The next prime is 78578237. The reversal of 78578232 is 23287587.

Its product of digits (188160) is a multiple of the sum of its prime factors (980).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78578237) 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 15 ways as a sum of consecutive naturals, for example, 94603 + ... + 95429.

It is an arithmetic number, because the mean of its divisors is an integer number (3185730).

Almost surely, 2^78578232 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 78578232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (101943360).

78578232 is an abundant number, since it is smaller than the sum of its proper divisors (125308488).

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

78578232 is a wasteful number, since it uses less digits than its factorization.

78578232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 980 (or 976 counting only the distinct ones).

The product of its digits is 188160, while the sum is 42.

The square root of 78578232 is about 8864.4363611005. The cubic root of 78578232 is about 428.3190767089.

The spelling of 78578232 in words is "seventy-eight million, five hundred seventy-eight thousand, two hundred thirty-two".