18228435 has 8 divisors (see below), whose sum is σ = 29165520. Its totient is φ = 9721824.

The previous prime is 18228421. The next prime is 18228439. The reversal of 18228435 is 53482281.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 18228435 - 2⁷ = 18228307 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18228396 and 18228405.

It is not an unprimeable number, because it can be changed into a prime (18228439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 607600 + ... + 607629.

It is an arithmetic number, because the mean of its divisors is an integer number (3645690).

Almost surely, 2^18228435 is an apocalyptic number.

18228435 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

18228435 is a deficient number, since it is larger than the sum of its proper divisors (10937085).

18228435 is a wasteful number, since it uses less digits than its factorization.

18228435 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1215237.

The product of its digits is 15360, while the sum is 33.

The square root of 18228435 is about 4269.4771342636. The cubic root of 18228435 is about 263.1781287354.

The spelling of 18228435 in words is "eighteen million, two hundred twenty-eight thousand, four hundred thirty-five".