78410720 has 48 divisors (see below), whose sum is σ = 195002640. Its totient is φ = 29712384.

The previous prime is 78410719. The next prime is 78410723. The reversal of 78410720 is 2701487.

It is a super-2 number, since 2×78410720² = 12296482021836800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78410723) 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 7 ways as a sum of consecutive naturals, for example, 9857 + ... + 15936.

It is an arithmetic number, because the mean of its divisors is an integer number (4062555).

Almost surely, 2^78410720 is an apocalyptic number.

It is an amenable number.

78410720 is an abundant number, since it is smaller than the sum of its proper divisors (116591920).

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

78410720 is a wasteful number, since it uses less digits than its factorization.

78410720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25827 (or 25819 counting only the distinct ones).

The product of its (nonzero) digits is 3136, while the sum is 29.

The square root of 78410720 is about 8854.9827780747. The cubic root of 78410720 is about 428.0144985917.

The spelling of 78410720 in words is "seventy-eight million, four hundred ten thousand, seven hundred twenty".