228661422 has 16 divisors (see below), whose sum is σ = 498897792. Its totient is φ = 69291320.

The previous prime is 228661421. The next prime is 228661429. The reversal of 228661422 is 224166822.

It is a super-2 number, since 2×228661422² = 104572091822124168, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228661421) 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 7 ways as a sum of consecutive naturals, for example, 1732218 + ... + 1732349.

It is an arithmetic number, because the mean of its divisors is an integer number (31181112).

Almost surely, 2^228661422 is an apocalyptic number.

228661422 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

228661422 is an abundant number, since it is smaller than the sum of its proper divisors (270236370).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

228661422 is a wasteful number, since it uses less digits than its factorization.

228661422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3464583.

The product of its digits is 18432, while the sum is 33.

The square root of 228661422 is about 15121.5548803686. The cubic root of 228661422 is about 611.5016501385.

The spelling of 228661422 in words is "two hundred twenty-eight million, six hundred sixty-one thousand, four hundred twenty-two".