72106237 has 8 divisors (see below), whose sum is σ = 82863872. Its totient is φ = 61462800.

The previous prime is 72106171. The next prime is 72106241. The reversal of 72106237 is 73260127.

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

It is a de Polignac number, because none of the positive numbers 2^k-72106237 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72106247) 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, 27189 + ... + 29722.

It is an arithmetic number, because the mean of its divisors is an integer number (10357984).

Almost surely, 2^72106237 is an apocalyptic number.

It is an amenable number.

72106237 is a deficient number, since it is larger than the sum of its proper divisors (10757635).

72106237 is a wasteful number, since it uses less digits than its factorization.

72106237 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57099.

The product of its (nonzero) digits is 3528, while the sum is 28.

The square root of 72106237 is about 8491.5391419930. The cubic root of 72106237 is about 416.2212768945.

The spelling of 72106237 in words is "seventy-two million, one hundred six thousand, two hundred thirty-seven".