72329287 has 12 divisors (see below), whose sum is σ = 74751840. Its totient is φ = 69979616.

The previous prime is 72329281. The next prime is 72329291. The reversal of 72329287 is 78292327.

It is a de Polignac number, because none of the positive numbers 2^k-72329287 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72329281) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 302514 + ... + 302752.

It is an arithmetic number, because the mean of its divisors is an integer number (6229320).

Almost surely, 2^72329287 is an apocalyptic number.

72329287 is a deficient number, since it is larger than the sum of its proper divisors (2422553).

72329287 is a wasteful number, since it uses less digits than its factorization.

72329287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 470 (or 423 counting only the distinct ones).

The product of its digits is 84672, while the sum is 40.

The square root of 72329287 is about 8504.6626623282. The cubic root of 72329287 is about 416.6500081518.

The spelling of 72329287 in words is "seventy-two million, three hundred twenty-nine thousand, two hundred eighty-seven".