78382726 has 4 divisors (see below), whose sum is σ = 117574092. Its totient is φ = 39191362.

The previous prime is 78382723. The next prime is 78382727. The reversal of 78382726 is 62728387.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 62728387 = 59 ⋅1063193.

It is a super-2 number, since 2×78382726² = 12287703470382152, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78382723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19595680 + ... + 19595683.

It is an arithmetic number, because the mean of its divisors is an integer number (29393523).

Almost surely, 2^78382726 is an apocalyptic number.

78382726 is a deficient number, since it is larger than the sum of its proper divisors (39191366).

78382726 is a wasteful number, since it uses less digits than its factorization.

78382726 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39191365.

The product of its digits is 225792, while the sum is 43.

The square root of 78382726 is about 8853.4019450153. The cubic root of 78382726 is about 427.9635563053.

The spelling of 78382726 in words is "seventy-eight million, three hundred eighty-two thousand, seven hundred twenty-six".