73726431 has 8 divisors (see below), whose sum is σ = 102576000. Its totient is φ = 47013912.

The previous prime is 73726391. The next prime is 73726447. The reversal of 73726431 is 13462737.

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

It is not a de Polignac number, because 73726431 - 2¹¹ = 73724383 is a prime.

It is a super-2 number, since 2×73726431² = 10871173255995522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 73726392 and 73726401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73726031) 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 7 ways as a sum of consecutive naturals, for example, 534181 + ... + 534318.

It is an arithmetic number, because the mean of its divisors is an integer number (12822000).

Almost surely, 2^73726431 is an apocalyptic number.

73726431 is a deficient number, since it is larger than the sum of its proper divisors (28849569).

73726431 is a wasteful number, since it uses less digits than its factorization.

73726431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1068525.

The product of its digits is 21168, while the sum is 33.

The square root of 73726431 is about 8586.4096687731. The cubic root of 73726431 is about 419.3156485563.

The spelling of 73726431 in words is "seventy-three million, seven hundred twenty-six thousand, four hundred thirty-one".