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88389280 = 255778919
BaseRepresentation
bin1010100010010…
…11011010100000
320011022122022001
411101023122200
5140111424110
612434253344
72122203460
oct521133240
9204278261
1088389280
11459911a1
1225727254
1315409a65
14ba4bba0
157b5e63a
hex544b6a0

88389280 has 48 divisors (see below), whose sum is σ = 238654080. Its totient is φ = 30304512.

The previous prime is 88389269. The next prime is 88389283. The reversal of 88389280 is 8298388.

It is a self number, because there is not a number n which added to its sum of digits gives 88389280.

It is not an unprimeable number, because it can be changed into a prime (88389283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38340 + ... + 40579.

It is an arithmetic number, because the mean of its divisors is an integer number (4971960).

Almost surely, 288389280 is an apocalyptic number.

88389280 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

88389280 is an abundant number, since it is smaller than the sum of its proper divisors (150264800).

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

88389280 is a wasteful number, since it uses less digits than its factorization.

88389280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78941 (or 78933 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 46.

The square root of 88389280 is about 9401.5573178064. The cubic root of 88389280 is about 445.4509253173.

The spelling of 88389280 in words is "eighty-eight million, three hundred eighty-nine thousand, two hundred eighty".

Divisors: 1 2 4 5 7 8 10 14 16 20 28 32 35 40 56 70 80 112 140 160 224 280 560 1120 78919 157838 315676 394595 552433 631352 789190 1104866 1262704 1578380 2209732 2525408 2762165 3156760 4419464 5524330 6313520 8838928 11048660 12627040 17677856 22097320 44194640 88389280