73725826 has 4 divisors (see below), whose sum is σ = 110588742. Its totient is φ = 36862912.

The previous prime is 73725823. The next prime is 73725851. The reversal of 73725826 is 62852737.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 62852737 = 1831 ⋅34327.

It can be written as a sum of positive squares in only one way, i.e., 69705801 + 4020025 = 8349^2 + 2005^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (73725823) 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 as a sum of consecutive naturals, namely, 18431455 + ... + 18431458.

Almost surely, 2^73725826 is an apocalyptic number.

73725826 is the 5431-st centered pentagonal number.

73725826 is a deficient number, since it is larger than the sum of its proper divisors (36862916).

73725826 is a wasteful number, since it uses less digits than its factorization.

73725826 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36862915.

The product of its digits is 141120, while the sum is 40.

The square root of 73725826 is about 8586.3744386091. The cubic root of 73725826 is about 419.3145015834.

The spelling of 73725826 in words is "seventy-three million, seven hundred twenty-five thousand, eight hundred twenty-six".