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67428333 = 3271070291
BaseRepresentation
bin1000000010011…
…01111111101101
311200212201021200
410001031333231
5114230201313
610405120113
71446063030
oct401157755
9150781250
1067428333
11350749a5
121a6b9039
1310c7b12b
148d53017
155dbdb73
hex404dfed

67428333 has 12 divisors (see below), whose sum is σ = 111310368. Its totient is φ = 38530440.

The previous prime is 67428281. The next prime is 67428367. The reversal of 67428333 is 33382476.

It is not a de Polignac number, because 67428333 - 28 = 67428077 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67428133) 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, 535083 + ... + 535208.

It is an arithmetic number, because the mean of its divisors is an integer number (9275864).

Almost surely, 267428333 is an apocalyptic number.

67428333 is a gapful number since it is divisible by the number (63) formed by its first and last digit.

It is an amenable number.

67428333 is a deficient number, since it is larger than the sum of its proper divisors (43882035).

67428333 is a wasteful number, since it uses less digits than its factorization.

67428333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1070304 (or 1070301 counting only the distinct ones).

The product of its digits is 72576, while the sum is 36.

The square root of 67428333 is about 8211.4756895457. The cubic root of 67428333 is about 407.0184920776.

The spelling of 67428333 in words is "sixty-seven million, four hundred twenty-eight thousand, three hundred thirty-three".

Divisors: 1 3 7 9 21 63 1070291 3210873 7492037 9632619 22476111 67428333