90237 has 8 divisors (see below), whose sum is σ = 137536. Its totient is φ = 51552.

The previous prime is 90227. The next prime is 90239. The reversal of 90237 is 73209.

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

It is not a de Polignac number, because 90237 - 2⁶ = 90173 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 4297 = 90237 / (9 + 0 + 2 + 3 + 7).

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 90237.

It is not an unprimeable number, because it can be changed into a prime (90239) 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, 2128 + ... + 2169.

It is an arithmetic number, because the mean of its divisors is an integer number (17192).

2⁹⁰²³⁷ is an apocalyptic number.

It is an amenable number.

90237 is a deficient number, since it is larger than the sum of its proper divisors (47299).

90237 is a wasteful number, since it uses less digits than its factorization.

90237 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4307.

The product of its (nonzero) digits is 378, while the sum is 21.

The square root of 90237 is about 300.3947403002. The cubic root of 90237 is about 44.8533497620.

It can be divided in two parts, 902 and 37, that added together give a palindrome (939).

The spelling of 90237 in words is "ninety thousand, two hundred thirty-seven".