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BaseRepresentation
bin111101111000…
…111111100100
31010112021110100
4331320333210
513123133403
61335424100
7254621646
oct75707744
933467410
1016224228
119181559
125525030
133490947
142224896
1516572a3
hexf78fe4

16224228 has 36 divisors (see below), whose sum is σ = 41187328. Its totient is φ = 5384880.

The previous prime is 16224227. The next prime is 16224277. The reversal of 16224228 is 82242261.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (16224227) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8925 + ... + 10587.

Almost surely, 216224228 is an apocalyptic number.

16224228 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

16224228 is an abundant number, since it is smaller than the sum of its proper divisors (24963100).

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

16224228 is a wasteful number, since it uses less digits than its factorization.

16224228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1944 (or 1939 counting only the distinct ones).

The product of its digits is 3072, while the sum is 27.

The square root of 16224228 is about 4027.9309825269. The cubic root of 16224228 is about 253.1558768004.

Adding to 16224228 its reverse (82242261), we get a palindrome (98466489).

The spelling of 16224228 in words is "sixteen million, two hundred twenty-four thousand, two hundred twenty-eight".