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67989080 = 2351699727
BaseRepresentation
bin1000000110101…
…10111001011000
311201221012111002
410003112321120
5114401122310
610425124132
71453616615
oct403267130
9151835432
1067989080
1135418225
121a929648
1311116433
14905b50c
155e7eda5
hex40d6e58

67989080 has 16 divisors (see below), whose sum is σ = 152975520. Its totient is φ = 27195616.

The previous prime is 67989073. The next prime is 67989101. The reversal of 67989080 is 8098976.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 849824 + ... + 849903.

It is an arithmetic number, because the mean of its divisors is an integer number (9560970).

Almost surely, 267989080 is an apocalyptic number.

It is an amenable number.

67989080 is an abundant number, since it is smaller than the sum of its proper divisors (84986440).

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

67989080 is a wasteful number, since it uses less digits than its factorization.

67989080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1699738 (or 1699734 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 47.

The square root of 67989080 is about 8245.5491023946. The cubic root of 67989080 is about 408.1436601624.

The spelling of 67989080 in words is "sixty-seven million, nine hundred eighty-nine thousand, eighty".

Divisors: 1 2 4 5 8 10 20 40 1699727 3399454 6798908 8498635 13597816 16997270 33994540 67989080