78726250 has 20 divisors (see below), whose sum is σ = 147566826. Its totient is φ = 31490000.

The previous prime is 78726227. The next prime is 78726257. The reversal of 78726250 is 5262787.

It can be written as a sum of positive squares in 5 ways, for example, as 3713329 + 75012921 = 1927^2 + 8661^2 .

It is not an unprimeable number, because it can be changed into a prime (78726257) 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 9 ways as a sum of consecutive naturals, for example, 30241 + ... + 32740.

Almost surely, 2^78726250 is an apocalyptic number.

78726250 is a deficient number, since it is larger than the sum of its proper divisors (68840576).

78726250 is an equidigital number, since it uses as much as digits as its factorization.

78726250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63003 (or 62988 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 37.

The square root of 78726250 is about 8872.7814128378. The cubic root of 78726250 is about 428.5878498999.

The spelling of 78726250 in words is "seventy-eight million, seven hundred twenty-six thousand, two hundred fifty".