72289237 has 8 divisors (see below), whose sum is σ = 73051616. Its totient is φ = 71530992.

The previous prime is 72289213. The next prime is 72289247. The reversal of 72289237 is 73298227.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 72289237 - 2¹⁹ = 71764949 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 72289237.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72289247) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43618 + ... + 45244.

It is an arithmetic number, because the mean of its divisors is an integer number (9131452).

Almost surely, 2^72289237 is an apocalyptic number.

It is an amenable number.

72289237 is a deficient number, since it is larger than the sum of its proper divisors (762379).

72289237 is a wasteful number, since it uses less digits than its factorization.

72289237 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2067.

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

The square root of 72289237 is about 8502.3077455477. The cubic root of 72289237 is about 416.5730918043.

The spelling of 72289237 in words is "seventy-two million, two hundred eighty-nine thousand, two hundred thirty-seven".