228228401 has 4 divisors (see below), whose sum is σ = 229503600. Its totient is φ = 226953204.

The previous prime is 228228397. The next prime is 228228419. The reversal of 228228401 is 104822822.

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 not a de Polignac number, because 228228401 - 2² = 228228397 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (228228101) 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, 637331 + ... + 637688.

It is an arithmetic number, because the mean of its divisors is an integer number (57375900).

Almost surely, 2^228228401 is an apocalyptic number.

It is an amenable number.

228228401 is a deficient number, since it is larger than the sum of its proper divisors (1275199).

228228401 is a wasteful number, since it uses less digits than its factorization.

228228401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1275198.

The product of its (nonzero) digits is 4096, while the sum is 29.

The square root of 228228401 is about 15107.2300902581. The cubic root of 228228401 is about 611.1154016583.

The spelling of 228228401 in words is "two hundred twenty-eight million, two hundred twenty-eight thousand, four hundred one".