73216432 has 10 divisors (see below), whose sum is σ = 141856868. Its totient is φ = 36608208.

The previous prime is 73216421. The next prime is 73216439. The reversal of 73216432 is 23461237.

It is a self number, because there is not a number n which added to its sum of digits gives 73216432.

It is not an unprimeable number, because it can be changed into a prime (73216439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2287998 + ... + 2288029.

Almost surely, 2^73216432 is an apocalyptic number.

It is an amenable number.

73216432 is a deficient number, since it is larger than the sum of its proper divisors (68640436).

73216432 is a wasteful number, since it uses less digits than its factorization.

73216432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4576035 (or 4576029 counting only the distinct ones).

The product of its digits is 6048, while the sum is 28.

The square root of 73216432 is about 8556.6600960889. The cubic root of 73216432 is about 418.3465453342.

Adding to 73216432 its reverse (23461237), we get a palindrome (96677669).

The spelling of 73216432 in words is "seventy-three million, two hundred sixteen thousand, four hundred thirty-two".