73221076 has 12 divisors (see below), whose sum is σ = 131600308. Its totient is φ = 35620992.

The previous prime is 73221073. The next prime is 73221089. The reversal of 73221076 is 67012237.

It can be written as a sum of positive squares in 2 ways, for example, as 61152400 + 12068676 = 7820^2 + 3474^2 .

It is a super-2 number, since 2×73221076² = 10722651941195552, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73221073) 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, 247221 + ... + 247516.

Almost surely, 2^73221076 is an apocalyptic number.

It is an amenable number.

73221076 is a deficient number, since it is larger than the sum of its proper divisors (58379232).

73221076 is a wasteful number, since it uses less digits than its factorization.

73221076 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 494778 (or 494776 counting only the distinct ones).

The product of its (nonzero) digits is 3528, while the sum is 28.

The square root of 73221076 is about 8556.9314593492. The cubic root of 73221076 is about 418.3553901624.

The spelling of 73221076 in words is "seventy-three million, two hundred twenty-one thousand, seventy-six".