72443622 has 32 divisors (see below), whose sum is σ = 148728960. Its totient is φ = 23515520.

The previous prime is 72443611. The next prime is 72443639. The reversal of 72443622 is 22634427.

It is a self number, because there is not a number n which added to its sum of digits gives 72443622.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 39097 + ... + 40907.

It is an arithmetic number, because the mean of its divisors is an integer number (4647780).

Almost surely, 2^72443622 is an apocalyptic number.

72443622 is an abundant number, since it is smaller than the sum of its proper divisors (76285338).

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

72443622 is a wasteful number, since it uses less digits than its factorization.

72443622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1988.

The product of its digits is 16128, while the sum is 30.

The square root of 72443622 is about 8511.3819089499. The cubic root of 72443622 is about 416.8694333274.

The spelling of 72443622 in words is "seventy-two million, four hundred forty-three thousand, six hundred twenty-two".