72451726 has 4 divisors (see below), whose sum is σ = 108677592. Its totient is φ = 36225862.

The previous prime is 72451711. The next prime is 72451747. The reversal of 72451726 is 62715427.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 62715427 = 2633 ⋅23819.

It is a super-3 number, since 3×72451726³ (a number of 25 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 72451691 and 72451700.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18112930 + ... + 18112933.

It is an arithmetic number, because the mean of its divisors is an integer number (27169398).

Almost surely, 2^72451726 is an apocalyptic number.

72451726 is a deficient number, since it is larger than the sum of its proper divisors (36225866).

72451726 is a wasteful number, since it uses less digits than its factorization.

72451726 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36225865.

The product of its digits is 23520, while the sum is 34.

The square root of 72451726 is about 8511.8579640405. The cubic root of 72451726 is about 416.8849772949.

The spelling of 72451726 in words is "seventy-two million, four hundred fifty-one thousand, seven hundred twenty-six".