228420463 has 4 divisors (see below), whose sum is σ = 228594960. Its totient is φ = 228245968.

The previous prime is 228420457. The next prime is 228420581. The reversal of 228420463 is 364024822.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 228420463 - 2²¹ = 226323311 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228420403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85270 + ... + 87907.

It is an arithmetic number, because the mean of its divisors is an integer number (57148740).

Almost surely, 2^228420463 is an apocalyptic number.

228420463 is a deficient number, since it is larger than the sum of its proper divisors (174497).

228420463 is a wasteful number, since it uses less digits than its factorization.

228420463 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174496.

The product of its (nonzero) digits is 18432, while the sum is 31.

The square root of 228420463 is about 15113.5853787247. The cubic root of 228420463 is about 611.2867784267.

The spelling of 228420463 in words is "two hundred twenty-eight million, four hundred twenty thousand, four hundred sixty-three".