228402417 has 4 divisors (see below), whose sum is σ = 304536560. Its totient is φ = 152268276.

The previous prime is 228402407. The next prime is 228402457. The reversal of 228402417 is 714204822.

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 not a de Polignac number, because 228402417 - 2¹⁶ = 228336881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (228402407) 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, 38067067 + ... + 38067072.

It is an arithmetic number, because the mean of its divisors is an integer number (76134140).

Almost surely, 2^228402417 is an apocalyptic number.

It is an amenable number.

228402417 is a deficient number, since it is larger than the sum of its proper divisors (76134143).

228402417 is an equidigital number, since it uses as much as digits as its factorization.

228402417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76134142.

The product of its (nonzero) digits is 7168, while the sum is 30.

The square root of 228402417 is about 15112.9883543924. The cubic root of 228402417 is about 611.2706800854.

The spelling of 228402417 in words is "two hundred twenty-eight million, four hundred two thousand, four hundred seventeen".