228738001 has 4 divisors (see below), whose sum is σ = 229228272. Its totient is φ = 228247732.

The previous prime is 228737953. The next prime is 228738011. The reversal of 228738001 is 100837822.

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, and also an emirpimes, since its reverse is a distinct semiprime: 100837822 = 2 ⋅50418911.

It is a cyclic number.

It is not a de Polignac number, because 228738001 - 2⁹ = 228737489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (228738011) 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, 244435 + ... + 245368.

It is an arithmetic number, because the mean of its divisors is an integer number (57307068).

Almost surely, 2^228738001 is an apocalyptic number.

It is an amenable number.

228738001 is a deficient number, since it is larger than the sum of its proper divisors (490271).

228738001 is an equidigital number, since it uses as much as digits as its factorization.

228738001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 490270.

The product of its (nonzero) digits is 5376, while the sum is 31.

The square root of 228738001 is about 15124.0867823482. The cubic root of 228738001 is about 611.5699067452.

The spelling of 228738001 in words is "two hundred twenty-eight million, seven hundred thirty-eight thousand, one".