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28126168 = 2374211193
BaseRepresentation
bin110101101001…
…0101111011000
31221220221211221
41223102233120
524200014133
62442501424
7461032330
oct153225730
957827757
1028126168
1114970674
129504874
135a9a105
143a420c0
152708a2d
hex1ad2bd8

28126168 has 32 divisors (see below), whose sum is σ = 60464160. Its totient is φ = 12015360.

The previous prime is 28126159. The next prime is 28126181. The reversal of 28126168 is 86162182.

It is a Smith number, since the sum of its digits (34) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22980 + ... + 24172.

It is an arithmetic number, because the mean of its divisors is an integer number (1889505).

Almost surely, 228126168 is an apocalyptic number.

28126168 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

28126168 is an abundant number, since it is smaller than the sum of its proper divisors (32337992).

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

28126168 is a wasteful number, since it uses less digits than its factorization.

28126168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1627 (or 1623 counting only the distinct ones).

The product of its digits is 9216, while the sum is 34.

The square root of 28126168 is about 5303.4109778519. The cubic root of 28126168 is about 304.1143095052.

The spelling of 28126168 in words is "twenty-eight million, one hundred twenty-six thousand, one hundred sixty-eight".

Divisors: 1 2 4 7 8 14 28 56 421 842 1193 1684 2386 2947 3368 4772 5894 8351 9544 11788 16702 23576 33404 66808 502253 1004506 2009012 3515771 4018024 7031542 14063084 28126168