73012 has 6 divisors (see below), whose sum is σ = 127778. Its totient is φ = 36504.

The previous prime is 73009. The next prime is 73013. The reversal of 73012 is 21037.

It can be written as a sum of positive squares in only one way, i.e., 38416 + 34596 = 196^2 + 186^2 .

It is a junction number, because it is equal to n+sod(n) for n = 72983 and 73001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9123 + ... + 9130.

2⁷³⁰¹² is an apocalyptic number.

It is an amenable number.

73012 is a deficient number, since it is larger than the sum of its proper divisors (54766).

73012 is a wasteful number, since it uses less digits than its factorization.

73012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18257 (or 18255 counting only the distinct ones).

The product of its (nonzero) digits is 42, while the sum is 13.

The square root of 73012 is about 270.2073278059. The cubic root of 73012 is about 41.7956818872.

Adding to 73012 its reverse (21037), we get a palindrome (94049).

The spelling of 73012 in words is "seventy-three thousand, twelve", and thus it is an iban number.