228648037 has 4 divisors (see below), whose sum is σ = 238589280. Its totient is φ = 218706796.

The previous prime is 228648023. The next prime is 228648059. The reversal of 228648037 is 730846822.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-228648037 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228648067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4970587 + ... + 4970632.

It is an arithmetic number, because the mean of its divisors is an integer number (59647320).

Almost surely, 2^228648037 is an apocalyptic number.

It is an amenable number.

228648037 is a deficient number, since it is larger than the sum of its proper divisors (9941243).

228648037 is an equidigital number, since it uses as much as digits as its factorization.

228648037 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9941242.

The product of its (nonzero) digits is 129024, while the sum is 40.

The square root of 228648037 is about 15121.1122937435. The cubic root of 228648037 is about 611.4897182186.

The spelling of 228648037 in words is "two hundred twenty-eight million, six hundred forty-eight thousand, thirty-seven".