72276140 has 12 divisors (see below), whose sum is σ = 151779936. Its totient is φ = 28910448.

The previous prime is 72276137. The next prime is 72276161. The reversal of 72276140 is 4167227.

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, 1806884 + ... + 1806923.

It is an arithmetic number, because the mean of its divisors is an integer number (12648328).

Almost surely, 2^72276140 is an apocalyptic number.

It is an amenable number.

72276140 is an abundant number, since it is smaller than the sum of its proper divisors (79503796).

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

72276140 is a wasteful number, since it uses less digits than its factorization.

72276140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3613816 (or 3613814 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 29.

The square root of 72276140 is about 8501.5375080041. The cubic root of 72276140 is about 416.5479327464.

The spelling of 72276140 in words is "seventy-two million, two hundred seventy-six thousand, one hundred forty".