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27886968 = 23321572467
BaseRepresentation
bin110101001100…
…0010101111000
31221110210201200
41222120111320
524114340333
62433414200
7456015054
oct152302570
957423650
1027886968
111481798a
12940a360
135a15285
1439bcc64
1526acc13
hex1a98578

27886968 has 48 divisors (see below), whose sum is σ = 76039080. Its totient is φ = 9232704.

The previous prime is 27886967. The next prime is 27886981. The reversal of 27886968 is 86968872.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27886967) 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, 10071 + ... + 12537.

Almost surely, 227886968 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27886968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38019540).

27886968 is an abundant number, since it is smaller than the sum of its proper divisors (48152112).

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

27886968 is a wasteful number, since it uses less digits than its factorization.

27886968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2636 (or 2629 counting only the distinct ones).

The product of its digits is 2322432, while the sum is 54.

The square root of 27886968 is about 5280.8113013059. The cubic root of 27886968 is about 303.2497369228.

The spelling of 27886968 in words is "twenty-seven million, eight hundred eighty-six thousand, nine hundred sixty-eight".

Divisors: 1 2 3 4 6 8 9 12 18 24 36 72 157 314 471 628 942 1256 1413 1884 2467 2826 3768 4934 5652 7401 9868 11304 14802 19736 22203 29604 44406 59208 88812 177624 387319 774638 1161957 1549276 2323914 3098552 3485871 4647828 6971742 9295656 13943484 27886968