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67294989 = 338330029
BaseRepresentation
bin1000000001011…
…01011100001101
311200121221101000
410000231130031
5114211414424
610402210513
71444666206
oct400553415
9150557330
1067294989
1134a937a3
121a653a39
1310c32528
148d1a5ad
155d943c9
hex402d70d

67294989 has 16 divisors (see below), whose sum is σ = 100900800. Its totient is φ = 44321328.

The previous prime is 67294973. The next prime is 67295009. The reversal of 67294989 is 98949276.

It is not a de Polignac number, because 67294989 - 24 = 67294973 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67294589) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12774 + ... + 17255.

It is an arithmetic number, because the mean of its divisors is an integer number (6306300).

Almost surely, 267294989 is an apocalyptic number.

It is an amenable number.

67294989 is a deficient number, since it is larger than the sum of its proper divisors (33605811).

67294989 is a wasteful number, since it uses less digits than its factorization.

67294989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30121 (or 30115 counting only the distinct ones).

The product of its digits is 1959552, while the sum is 54.

The square root of 67294989 is about 8203.3523025651. The cubic root of 67294989 is about 406.7500130015.

The spelling of 67294989 in words is "sixty-seven million, two hundred ninety-four thousand, nine hundred eighty-nine".

Divisors: 1 3 9 27 83 249 747 2241 30029 90087 270261 810783 2492407 7477221 22431663 67294989