73209132 has 18 divisors (see below), whose sum is σ = 185056508. Its totient is φ = 24403032.

The previous prime is 73209131. The next prime is 73209139. The reversal of 73209132 is 23190237.

It is a tau number, because it is divible by the number of its divisors (18).

It is a junction number, because it is equal to n+sod(n) for n = 73209096 and 73209105.

It is not an unprimeable number, because it can be changed into a prime (73209131) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1016758 + ... + 1016829.

Almost surely, 2^73209132 is an apocalyptic number.

It is an amenable number.

73209132 is an abundant number, since it is smaller than the sum of its proper divisors (111847376).

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

73209132 is a wasteful number, since it uses less digits than its factorization.

73209132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2033597 (or 2033592 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 27.

The square root of 73209132 is about 8556.2335171499. The cubic root of 73209132 is about 418.3326412091.

Adding to 73209132 its reverse (23190237), we get a palindrome (96399369).

The spelling of 73209132 in words is "seventy-three million, two hundred nine thousand, one hundred thirty-two".