72440526 has 8 divisors (see below), whose sum is σ = 144881064. Its totient is φ = 24146840.

The previous prime is 72440513. The next prime is 72440527. The reversal of 72440526 is 62504427.

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

72440526 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 72440493 and 72440502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72440527) 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, 6036705 + ... + 6036716.

It is an arithmetic number, because the mean of its divisors is an integer number (18110133).

Almost surely, 2^72440526 is an apocalyptic number.

72440526 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

72440526 is a wasteful number, since it uses less digits than its factorization.

72440526 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12073426.

The product of its (nonzero) digits is 13440, while the sum is 30.

The square root of 72440526 is about 8511.2000328978. The cubic root of 72440526 is about 416.8634947041.

The spelling of 72440526 in words is "seventy-two million, four hundred forty thousand, five hundred twenty-six".