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88005280 = 25511311613
BaseRepresentation
bin1010011111011…
…01101010100000
320010121010112211
411033231222200
5140012132110
612422131504
72116014106
oct517555240
9203533484
1088005280
1145749740
1225580b94
131530403c
14b98bc76
157ad598a
hex53edaa0

88005280 has 96 divisors (see below), whose sum is σ = 234275328. Its totient is φ = 30950400.

The previous prime is 88005263. The next prime is 88005299. The reversal of 88005280 is 8250088.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53754 + ... + 55366.

It is an arithmetic number, because the mean of its divisors is an integer number (2440368).

Almost surely, 288005280 is an apocalyptic number.

88005280 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 88005280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (117137664).

88005280 is an abundant number, since it is smaller than the sum of its proper divisors (146270048).

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

88005280 is a wasteful number, since it uses less digits than its factorization.

88005280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1670 (or 1662 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 31.

The square root of 88005280 is about 9381.1129403712. The cubic root of 88005280 is about 444.8049138563.

The spelling of 88005280 in words is "eighty-eight million, five thousand, two hundred eighty".

Divisors: 1 2 4 5 8 10 11 16 20 22 31 32 40 44 55 62 80 88 110 124 155 160 176 220 248 310 341 352 440 496 620 682 880 992 1240 1364 1613 1705 1760 2480 2728 3226 3410 4960 5456 6452 6820 8065 10912 12904 13640 16130 17743 25808 27280 32260 35486 50003 51616 54560 64520 70972 88715 100006 129040 141944 177430 200012 250015 258080 283888 354860 400024 500030 550033 567776 709720 800048 1000060 1100066 1419440 1600096 2000120 2200132 2750165 2838880 4000240 4400264 5500330 8000480 8800528 11000660 17601056 22001320 44002640 88005280