16386228 has 36 divisors (see below), whose sum is σ = 42759808. Its totient is φ = 5285520.

The previous prime is 16386217. The next prime is 16386233. The reversal of 16386228 is 82268361.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 16386192 and 16386201.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 6226 + ... + 8457.

Almost surely, 2^16386228 is an apocalyptic number.

16386228 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

16386228 is an abundant number, since it is smaller than the sum of its proper divisors (26373580).

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

16386228 is a wasteful number, since it uses less digits than its factorization.

16386228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14724 (or 14719 counting only the distinct ones).

The product of its digits is 27648, while the sum is 36.

The square root of 16386228 is about 4047.9906126373. The cubic root of 16386228 is about 253.9956805846.

The spelling of 16386228 in words is "sixteen million, three hundred eighty-six thousand, two hundred twenty-eight".