72726524 has 24 divisors (see below), whose sum is σ = 137836608. Its totient is φ = 33376320.

The previous prime is 72726503. The next prime is 72726541. The reversal of 72726524 is 42562727.

It is a congruent number.

It is an unprimeable number.

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, 5549 + ... + 13275.

It is an arithmetic number, because the mean of its divisors is an integer number (5743192).

Almost surely, 2^72726524 is an apocalyptic number.

It is an amenable number.

72726524 is a deficient number, since it is larger than the sum of its proper divisors (65110084).

72726524 is a wasteful number, since it uses less digits than its factorization.

72726524 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7925 (or 7923 counting only the distinct ones).

The product of its digits is 47040, while the sum is 35.

The square root of 72726524 is about 8527.9847560839. The cubic root of 72726524 is about 417.4113720581.

The spelling of 72726524 in words is "seventy-two million, seven hundred twenty-six thousand, five hundred twenty-four".