78245037 has 12 divisors (see below), whose sum is σ = 121714684. Its totient is φ = 48150720.

The previous prime is 78244979. The next prime is 78245039. The reversal of 78245037 is 73054287.

It can be written as a sum of positive squares in 2 ways, for example, as 40717161 + 37527876 = 6381^2 + 6126^2 .

It is not a de Polignac number, because 78245037 - 2⁷ = 78244909 is a prime.

It is a super-2 number, since 2×78245037² = 12244571630262738, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 78244992 and 78245010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78245039) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 334264 + ... + 334497.

Almost surely, 2^78245037 is an apocalyptic number.

It is an amenable number.

78245037 is a deficient number, since it is larger than the sum of its proper divisors (43469647).

78245037 is a wasteful number, since it uses less digits than its factorization.

78245037 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 668780 (or 668777 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 36.

The square root of 78245037 is about 8845.6224766830. The cubic root of 78245037 is about 427.7128190389.

The spelling of 78245037 in words is "seventy-eight million, two hundred forty-five thousand, thirty-seven".