78744092 has 48 divisors (see below), whose sum is σ = 164677632. Its totient is φ = 32235840.

The previous prime is 78744089. The next prime is 78744097. The reversal of 78744092 is 29044787.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78744097) 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, 71498 + ... + 72590.

It is an arithmetic number, because the mean of its divisors is an integer number (3430784).

Almost surely, 2^78744092 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 78744092, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82338816).

78744092 is an abundant number, since it is smaller than the sum of its proper divisors (85933540).

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

78744092 is a wasteful number, since it uses less digits than its factorization.

78744092 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1218 (or 1216 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 41.

The square root of 78744092 is about 8873.7867903167. The cubic root of 78744092 is about 428.6202248990.

The spelling of 78744092 in words is "seventy-eight million, seven hundred forty-four thousand, ninety-two".