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88668880 = 2451108361
BaseRepresentation
bin1010100100011…
…11101011010000
320011211211211121
411102033223100
5140144401010
612444252024
72124446566
oct522175320
9204754747
1088668880
1146062273
1225841014
13154a70c1
14bac1a36
157bb73da
hex548fad0

88668880 has 20 divisors (see below), whose sum is σ = 206155332. Its totient is φ = 35467520.

The previous prime is 88668871. The next prime is 88668883. The reversal of 88668880 is 8886688.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 43349056 + 45319824 = 6584^2 + 6732^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (88668883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 554101 + ... + 554260.

Almost surely, 288668880 is an apocalyptic number.

88668880 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

88668880 is an abundant number, since it is smaller than the sum of its proper divisors (117486452).

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

88668880 is a wasteful number, since it uses less digits than its factorization.

88668880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1108374 (or 1108368 counting only the distinct ones).

The product of its (nonzero) digits is 1179648, while the sum is 52.

The square root of 88668880 is about 9416.4154538763. The cubic root of 88668880 is about 445.9201261911.

The spelling of 88668880 in words is "eighty-eight million, six hundred sixty-eight thousand, eight hundred eighty".

Divisors: 1 2 4 5 8 10 16 20 40 80 1108361 2216722 4433444 5541805 8866888 11083610 17733776 22167220 44334440 88668880