78245726 has 8 divisors (see below), whose sum is σ = 126396984. Its totient is φ = 36113400.

The previous prime is 78245723. The next prime is 78245773. The reversal of 78245726 is 62754287.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×78245726² = 12244787274534152, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78245723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1504700 + ... + 1504751.

It is an arithmetic number, because the mean of its divisors is an integer number (15799623).

Almost surely, 2^78245726 is an apocalyptic number.

78245726 is a deficient number, since it is larger than the sum of its proper divisors (48151258).

78245726 is a wasteful number, since it uses less digits than its factorization.

78245726 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3009466.

The product of its digits is 188160, while the sum is 41.

The square root of 78245726 is about 8845.6614224149. The cubic root of 78245726 is about 427.7140744679.

The spelling of 78245726 in words is "seventy-eight million, two hundred forty-five thousand, seven hundred twenty-six".