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80712541 = 713268227
BaseRepresentation
bin1001100111110…
…01001101011101
312121212121210101
410303321031131
5131130300131
612001541101
72000021350
oct463711535
9177777711
1080712541
1141618588
1223044791
131394c800
14aa10297
157144c61
hex4cf935d

80712541 has 12 divisors (see below), whose sum is σ = 99885792. Its totient is φ = 63859536.

The previous prime is 80712529. The next prime is 80712581. The reversal of 80712541 is 14521708.

80712541 is an esthetic number in base 3, because in such base its adjacent digits differ by 1.

It is not a de Polignac number, because 80712541 - 217 = 80581469 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80712521) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 32931 + ... + 35296.

It is an arithmetic number, because the mean of its divisors is an integer number (8323816).

Almost surely, 280712541 is an apocalyptic number.

It is an amenable number.

80712541 is a deficient number, since it is larger than the sum of its proper divisors (19173251).

80712541 is a wasteful number, since it uses less digits than its factorization.

80712541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68260 (or 68247 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 28.

The square root of 80712541 is about 8984.0158615176. The cubic root of 80712541 is about 432.1624278471.

The spelling of 80712541 in words is "eighty million, seven hundred twelve thousand, five hundred forty-one".

Divisors: 1 7 13 91 169 1183 68227 477589 886951 6208657 11530363 80712541