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80848240 = 2451191873
BaseRepresentation
bin1001101000110…
…10010101110000
312122010111221021
410310122111300
5131144120430
612004505224
72001125104
oct464322560
9178114837
1080848240
1141700530
12230ab214
13139994c5
14aa47904
15717007a
hex4d1a570

80848240 has 40 divisors (see below), whose sum is σ = 205062768. Its totient is φ = 29399040.

The previous prime is 80848189. The next prime is 80848247. The reversal of 80848240 is 4284808.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×808482402 = 13072875822195200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 80848196 and 80848205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80848247) 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, 45057 + ... + 46816.

Almost surely, 280848240 is an apocalyptic number.

80848240 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

80848240 is an abundant number, since it is smaller than the sum of its proper divisors (124214528).

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

80848240 is a wasteful number, since it uses less digits than its factorization.

80848240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91897 (or 91891 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 34.

The square root of 80848240 is about 8991.5649360943. The cubic root of 80848240 is about 432.4044851280.

The spelling of 80848240 in words is "eighty million, eight hundred forty-eight thousand, two hundred forty".

Divisors: 1 2 4 5 8 10 11 16 20 22 40 44 55 80 88 110 176 220 440 880 91873 183746 367492 459365 734984 918730 1010603 1469968 1837460 2021206 3674920 4042412 5053015 7349840 8084824 10106030 16169648 20212060 40424120 80848240