73221744 has 40 divisors (see below), whose sum is σ = 199114240. Its totient is φ = 23122368.

The previous prime is 73221739. The next prime is 73221751. The reversal of 73221744 is 44712237.

It is a super-2 number, since 2×73221744² = 10722847588803072, 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, 39232 + ... + 41055.

It is an arithmetic number, because the mean of its divisors is an integer number (4977856).

Almost surely, 2^73221744 is an apocalyptic number.

It is an amenable number.

73221744 is an abundant number, since it is smaller than the sum of its proper divisors (125892496).

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

73221744 is a wasteful number, since it uses less digits than its factorization.

73221744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80317 (or 80311 counting only the distinct ones).

The product of its digits is 9408, while the sum is 30.

The square root of 73221744 is about 8556.9704919440. The cubic root of 73221744 is about 418.3566623851.

The spelling of 73221744 in words is "seventy-three million, two hundred twenty-one thousand, seven hundred forty-four".