72315526 has 8 divisors (see below), whose sum is σ = 109692360. Its totient is φ = 35751408.

The previous prime is 72315521. The next prime is 72315527. The reversal of 72315526 is 62551327.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72315521) 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 in 3 ways as a sum of consecutive naturals, for example, 202956 + ... + 203311.

It is an arithmetic number, because the mean of its divisors is an integer number (13711545).

Almost surely, 2^72315526 is an apocalyptic number.

72315526 is a deficient number, since it is larger than the sum of its proper divisors (37376834).

72315526 is a wasteful number, since it uses less digits than its factorization.

72315526 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 406358.

The product of its digits is 12600, while the sum is 31.

The square root of 72315526 is about 8503.8535970465. The cubic root of 72315526 is about 416.6235832431.

The spelling of 72315526 in words is "seventy-two million, three hundred fifteen thousand, five hundred twenty-six".