72333140 has 24 divisors (see below), whose sum is σ = 165709152. Its totient is φ = 26302880.

The previous prime is 72333139. The next prime is 72333161. The reversal of 72333140 is 4133327.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 164174 + ... + 164613.

It is an arithmetic number, because the mean of its divisors is an integer number (6904548).

Almost surely, 2^72333140 is an apocalyptic number.

It is an amenable number.

72333140 is an abundant number, since it is smaller than the sum of its proper divisors (93376012).

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

72333140 is a wasteful number, since it uses less digits than its factorization.

72333140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 328807 (or 328805 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 23.

The square root of 72333140 is about 8504.8891821117. The cubic root of 72333140 is about 416.6574063720.

Adding to 72333140 its reverse (4133327), we get a palindrome (76466467).

The spelling of 72333140 in words is "seventy-two million, three hundred thirty-three thousand, one hundred forty".