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80540968 = 2317678839
BaseRepresentation
bin1001100110011…
…11010100101000
312121112220102211
410303033110220
5131104302333
611554134504
71665405214
oct463172450
9177486384
1080540968
1141510692
1222b81434
13138bc6a1
14a9a7944
15710decd
hex4ccf528

80540968 has 32 divisors (see below), whose sum is σ = 162302400. Its totient is φ = 37331712.

The previous prime is 80540899. The next prime is 80540969. The reversal of 80540968 is 86904508.

It is a self number, because there is not a number n which added to its sum of digits gives 80540968.

It is not an unprimeable number, because it can be changed into a prime (80540969) 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 7 ways as a sum of consecutive naturals, for example, 4693 + ... + 13531.

It is an arithmetic number, because the mean of its divisors is an integer number (5071950).

Almost surely, 280540968 is an apocalyptic number.

It is an amenable number.

80540968 is an abundant number, since it is smaller than the sum of its proper divisors (81761432).

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

80540968 is a wasteful number, since it uses less digits than its factorization.

80540968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8929 (or 8925 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 40.

The square root of 80540968 is about 8974.4619894454. The cubic root of 80540968 is about 431.8559905221.

The spelling of 80540968 in words is "eighty million, five hundred forty thousand, nine hundred sixty-eight".

Divisors: 1 2 4 8 17 34 67 68 134 136 268 536 1139 2278 4556 8839 9112 17678 35356 70712 150263 300526 592213 601052 1184426 1202104 2368852 4737704 10067621 20135242 40270484 80540968