228912001 has 4 divisors (see below), whose sum is σ = 229997104. Its totient is φ = 227826900.

The previous prime is 228911989. The next prime is 228912071. The reversal of 228912001 is 100219822.

228912001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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: 100219822 = 2 ⋅50109911.

It is a cyclic number.

It is not a de Polignac number, because 228912001 - 2¹¹ = 228909953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (228912071) 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, 542235 + ... + 542656.

It is an arithmetic number, because the mean of its divisors is an integer number (57499276).

Almost surely, 2^228912001 is an apocalyptic number.

It is an amenable number.

228912001 is a deficient number, since it is larger than the sum of its proper divisors (1085103).

228912001 is a wasteful number, since it uses less digits than its factorization.

228912001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1085102.

The product of its (nonzero) digits is 576, while the sum is 25.

The square root of 228912001 is about 15129.8381022402. The cubic root of 228912001 is about 611.7249402945.

The spelling of 228912001 in words is "two hundred twenty-eight million, nine hundred twelve thousand, one".