72249922 has 8 divisors (see below), whose sum is σ = 108682956. Its totient is φ = 36022272.

The previous prime is 72249917. The next prime is 72249941. The reversal of 72249922 is 22994227.

It can be written as a sum of positive squares in 2 ways, for example, as 67092481 + 5157441 = 8191^2 + 2271^2 .

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

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 in 3 ways as a sum of consecutive naturals, for example, 50463 + ... + 51874.

Almost surely, 2^72249922 is an apocalyptic number.

72249922 is a deficient number, since it is larger than the sum of its proper divisors (36433034).

72249922 is a wasteful number, since it uses less digits than its factorization.

72249922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102692.

The product of its digits is 36288, while the sum is 37.

The square root of 72249922 is about 8499.9954117635. The cubic root of 72249922 is about 416.4975593936.

The spelling of 72249922 in words is "seventy-two million, two hundred forty-nine thousand, nine hundred twenty-two".