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67206940 = 2253360347
BaseRepresentation
bin1000000000101…
…11111100011100
311200110110120221
410000113330130
5114201110230
610400251124
71444151413
oct400277434
9150413527
1067206940
1134a33629
121a610aa4
1310c01428
148cd647a
155d7827a
hex4017f1c

67206940 has 12 divisors (see below), whose sum is σ = 141134616. Its totient is φ = 26882768.

The previous prime is 67206901. The next prime is 67206941. The reversal of 67206940 is 4960276.

It is a junction number, because it is equal to n+sod(n) for n = 67206896 and 67206905.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67206941) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1680154 + ... + 1680193.

It is an arithmetic number, because the mean of its divisors is an integer number (11761218).

Almost surely, 267206940 is an apocalyptic number.

It is an amenable number.

67206940 is an abundant number, since it is smaller than the sum of its proper divisors (73927676).

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

67206940 is a wasteful number, since it uses less digits than its factorization.

67206940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3360356 (or 3360354 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 67206940 is about 8197.9838984960. The cubic root of 67206940 is about 406.5725378607.

The spelling of 67206940 in words is "sixty-seven million, two hundred six thousand, nine hundred forty".

Divisors: 1 2 4 5 10 20 3360347 6720694 13441388 16801735 33603470 67206940