72323472 has 40 divisors (see below), whose sum is σ = 201209344. Its totient is φ = 22253184.

The previous prime is 72323453. The next prime is 72323479. The reversal of 72323472 is 27432327.

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (72323479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57328 + ... + 58575.

Almost surely, 2^72323472 is an apocalyptic number.

It is an amenable number.

72323472 is an abundant number, since it is smaller than the sum of its proper divisors (128885872).

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

72323472 is a wasteful number, since it uses less digits than its factorization.

72323472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115927 (or 115921 counting only the distinct ones).

The product of its digits is 14112, while the sum is 30.

The square root of 72323472 is about 8504.3207841661. The cubic root of 72323472 is about 416.6388421597.

Adding to 72323472 its reverse (27432327), we get a palindrome (99755799).

The spelling of 72323472 in words is "seventy-two million, three hundred twenty-three thousand, four hundred seventy-two".