72087283 has 4 divisors (see below), whose sum is σ = 72115920. Its totient is φ = 72058648.

The previous prime is 72087277. The next prime is 72087287. The reversal of 72087283 is 38278027.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 72087283 - 2⁵ = 72087251 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72087287) 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 3 ways as a sum of consecutive naturals, for example, 10135 + ... + 15712.

It is an arithmetic number, because the mean of its divisors is an integer number (18028980).

Almost surely, 2^72087283 is an apocalyptic number.

72087283 is a deficient number, since it is larger than the sum of its proper divisors (28637).

72087283 is a wasteful number, since it uses less digits than its factorization.

72087283 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28636.

The product of its (nonzero) digits is 37632, while the sum is 37.

The square root of 72087283 is about 8490.4230165522. The cubic root of 72087283 is about 416.1848040929.

The spelling of 72087283 in words is "seventy-two million, eighty-seven thousand, two hundred eighty-three".