78737232 has 80 divisors (see below), whose sum is σ = 235163520. Its totient is φ = 22235136.

The previous prime is 78737231. The next prime is 78737249. The reversal of 78737232 is 23273787.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78737231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28588 + ... + 31220.

It is an arithmetic number, because the mean of its divisors is an integer number (2939544).

Almost surely, 2^78737232 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 78737232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (117581760).

78737232 is an abundant number, since it is smaller than the sum of its proper divisors (156426288).

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

78737232 is a wasteful number, since it uses less digits than its factorization.

78737232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2740 (or 2734 counting only the distinct ones).

The product of its digits is 98784, while the sum is 39.

The square root of 78737232 is about 8873.4002501859. The cubic root of 78737232 is about 428.6077777424.

The spelling of 78737232 in words is "seventy-eight million, seven hundred thirty-seven thousand, two hundred thirty-two".