72349287 has 16 divisors (see below), whose sum is σ = 100038240. Its totient is φ = 46454912.

The previous prime is 72349261. The next prime is 72349301. The reversal of 72349287 is 78294327.

It is a cyclic number.

It is not a de Polignac number, because 72349287 - 2⁷ = 72349159 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72349217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47713 + ... + 49205.

It is an arithmetic number, because the mean of its divisors is an integer number (6252390).

Almost surely, 2^72349287 is an apocalyptic number.

72349287 is a deficient number, since it is larger than the sum of its proper divisors (27688953).

72349287 is a wasteful number, since it uses less digits than its factorization.

72349287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2082.

The product of its digits is 169344, while the sum is 42.

The square root of 72349287 is about 8505.8384066475. The cubic root of 72349287 is about 416.6884076833.

The spelling of 72349287 in words is "seventy-two million, three hundred forty-nine thousand, two hundred eighty-seven".