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88881280 = 2751131229
BaseRepresentation
bin1010100110000…
…11100010000000
320012020122012021
411103003202000
5140223200110
612453011224
72126323045
oct523034200
9205218167
1088881280
1146197904
1225923b14
131554c997
14bb391cc
157c0a2da
hex54c3880

88881280 has 64 divisors (see below), whose sum is σ = 214536600. Its totient is φ = 35209216.

The previous prime is 88881271. The next prime is 88881281. The reversal of 88881280 is 8218888.

It can be written as a sum of positive squares in 4 ways, for example, as 71774784 + 17106496 = 8472^2 + 4136^2 .

It is a tau number, because it is divible by the number of its divisors (64).

It is not an unprimeable number, because it can be changed into a prime (88881281) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71706 + ... + 72934.

Almost surely, 288881280 is an apocalyptic number.

88881280 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 88881280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (107268300).

88881280 is an abundant number, since it is smaller than the sum of its proper divisors (125655320).

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

88881280 is a wasteful number, since it uses less digits than its factorization.

88881280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1361 (or 1349 counting only the distinct ones).

The product of its (nonzero) digits is 65536, while the sum is 43.

The square root of 88881280 is about 9427.6868849151. The cubic root of 88881280 is about 446.2758989224.

The spelling of 88881280 in words is "eighty-eight million, eight hundred eighty-one thousand, two hundred eighty".

Divisors: 1 2 4 5 8 10 16 20 32 40 64 80 113 128 160 226 320 452 565 640 904 1130 1229 1808 2260 2458 3616 4520 4916 6145 7232 9040 9832 12290 14464 18080 19664 24580 36160 39328 49160 72320 78656 98320 138877 157312 196640 277754 393280 555508 694385 786560 1111016 1388770 2222032 2777540 4444064 5555080 8888128 11110160 17776256 22220320 44440640 88881280