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80539137 = 3373591187
BaseRepresentation
bin1001100110011…
…10111000000001
312121112210221000
410303032320001
5131104223022
611554122213
71665366660
oct463167001
9177483830
1080539137
114150a278
1222b80369
13138bb8c3
14a9a6dd7
15710d6ac
hex4ccee01

80539137 has 32 divisors (see below), whose sum is σ = 136857600. Its totient is φ = 45855504.

The previous prime is 80539127. The next prime is 80539139. The reversal of 80539137 is 73193508.

It is not a de Polignac number, because 80539137 - 27 = 80539009 is a prime.

It is not an unprimeable number, because it can be changed into a prime (80539139) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 67258 + ... + 68444.

It is an arithmetic number, because the mean of its divisors is an integer number (4276800).

Almost surely, 280539137 is an apocalyptic number.

It is an amenable number.

80539137 is a deficient number, since it is larger than the sum of its proper divisors (56318463).

80539137 is a wasteful number, since it uses less digits than its factorization.

80539137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1562 (or 1556 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 36.

The square root of 80539137 is about 8974.3599771794. The cubic root of 80539137 is about 431.8527179254.

The spelling of 80539137 in words is "eighty million, five hundred thirty-nine thousand, one hundred thirty-seven".

Divisors: 1 3 7 9 21 27 63 189 359 1077 1187 2513 3231 3561 7539 8309 9693 10683 22617 24927 32049 67851 74781 224343 426133 1278399 2982931 3835197 8948793 11505591 26846379 80539137