23228837 has 4 divisors (see below), whose sum is σ = 23795436. Its totient is φ = 22662240.

The previous prime is 23228801. The next prime is 23228839. The reversal of 23228837 is 73882232.

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

It can be written as a sum of positive squares in 2 ways, for example, as 6180196 + 17048641 = 2486^2 + 4129^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23228837 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23228797 and 23228806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23228839) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 283238 + ... + 283319.

It is an arithmetic number, because the mean of its divisors is an integer number (5948859).

Almost surely, 2^23228837 is an apocalyptic number.

It is an amenable number.

23228837 is a deficient number, since it is larger than the sum of its proper divisors (566599).

23228837 is an equidigital number, since it uses as much as digits as its factorization.

23228837 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 566598.

The product of its digits is 32256, while the sum is 35.

The square root of 23228837 is about 4819.6303800188. The cubic root of 23228837 is about 285.3267494854.

The spelling of 23228837 in words is "twenty-three million, two hundred twenty-eight thousand, eight hundred thirty-seven".