72473324 has 48 divisors (see below), whose sum is σ = 159183360. Its totient is φ = 28047360.

The previous prime is 72473311. The next prime is 72473327. The reversal of 72473324 is 42337427.

It is not an unprimeable number, because it can be changed into a prime (72473327) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50732 + ... + 52140.

It is an arithmetic number, because the mean of its divisors is an integer number (3316320).

Almost surely, 2^72473324 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 72473324, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79591680).

72473324 is an abundant number, since it is smaller than the sum of its proper divisors (86710036).

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

72473324 is a wasteful number, since it uses less digits than its factorization.

72473324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1598 (or 1596 counting only the distinct ones).

The product of its digits is 28224, while the sum is 32.

The square root of 72473324 is about 8513.1265701856. The cubic root of 72473324 is about 416.9263979194.

The spelling of 72473324 in words is "seventy-two million, four hundred seventy-three thousand, three hundred twenty-four".