72032140 has 12 divisors (see below), whose sum is σ = 151267536. Its totient is φ = 28812848.

The previous prime is 72032119. The next prime is 72032161. The reversal of 72032140 is 4123027.

It is an interprime number because it is at equal distance from previous prime (72032119) and next prime (72032161).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1800784 + ... + 1800823.

It is an arithmetic number, because the mean of its divisors is an integer number (12605628).

Almost surely, 2^72032140 is an apocalyptic number.

It is an amenable number.

72032140 is an abundant number, since it is smaller than the sum of its proper divisors (79235396).

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

72032140 is a wasteful number, since it uses less digits than its factorization.

72032140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3601616 (or 3601614 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 19.

The square root of 72032140 is about 8487.1750305976. The cubic root of 72032140 is about 416.0786571557.

Adding to 72032140 its reverse (4123027), we get a palindrome (76155167).

The spelling of 72032140 in words is "seventy-two million, thirty-two thousand, one hundred forty".