73220448 has 48 divisors (see below), whose sum is σ = 219663360. Its totient is φ = 20919936.

The previous prime is 73220429. The next prime is 73220491. The reversal of 73220448 is 84402237.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×73220448² = 10722468010641408, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53808 + ... + 55151.

It is an arithmetic number, because the mean of its divisors is an integer number (4576320).

Almost surely, 2^73220448 is an apocalyptic number.

It is an amenable number.

73220448 is an abundant number, since it is smaller than the sum of its proper divisors (146442912).

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

73220448 is a wasteful number, since it uses less digits than its factorization.

73220448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108979 (or 108971 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 30.

The square root of 73220448 is about 8556.8947638732. The cubic root of 73220448 is about 418.3541941136.

The spelling of 73220448 in words is "seventy-three million, two hundred twenty thousand, four hundred forty-eight".