78722488 has 32 divisors (see below), whose sum is σ = 160524000. Its totient is φ = 35975808.

The previous prime is 78722471. The next prime is 78722507. The reversal of 78722488 is 88422787.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 7038 + ... + 14386.

It is an arithmetic number, because the mean of its divisors is an integer number (5016375).

Almost surely, 2^78722488 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 78722488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80262000).

78722488 is an abundant number, since it is smaller than the sum of its proper divisors (81801512).

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

78722488 is a wasteful number, since it uses less digits than its factorization.

78722488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7471 (or 7467 counting only the distinct ones).

The product of its digits is 401408, while the sum is 46.

The square root of 78722488 is about 8872.5694136479. The cubic root of 78722488 is about 428.5810229810.

The spelling of 78722488 in words is "seventy-eight million, seven hundred twenty-two thousand, four hundred eighty-eight".