73072132 has 18 divisors (see below), whose sum is σ = 148754382. Its totient is φ = 31316544.

The previous prime is 73072123. The next prime is 73072159. The reversal of 73072132 is 23127037.

It can be written as a sum of positive squares in only one way, i.e., 72692676 + 379456 = 8526^2 + 616^2 .

It is a junction number, because it is equal to n+sod(n) for n = 73072097 and 73072106.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 186213 + ... + 186604.

Almost surely, 2^73072132 is an apocalyptic number.

It is an amenable number.

73072132 is an abundant number, since it is smaller than the sum of its proper divisors (75682250).

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

73072132 is a wasteful number, since it uses less digits than its factorization.

73072132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 372835 (or 372826 counting only the distinct ones).

The product of its (nonzero) digits is 1764, while the sum is 25.

The square root of 73072132 is about 8548.2239090936. The cubic root of 73072132 is about 418.0715291615.

Adding to 73072132 its reverse (23127037), we get a palindrome (96199169).

The spelling of 73072132 in words is "seventy-three million, seventy-two thousand, one hundred thirty-two".