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75213333 = 3313214283
BaseRepresentation
bin1000111101110…
…10101000010101
312020112020022000
410132322220111
5123223311313
611244025513
71602205566
oct436725025
9166466260
1075213333
1139501988
1221232299
1312775740
149dbc16d
15690a673
hex47baa15

75213333 has 16 divisors (see below), whose sum is σ = 119999040. Its totient is φ = 46284912.

The previous prime is 75213331. The next prime is 75213349. The reversal of 75213333 is 33331257.

It is not a de Polignac number, because 75213333 - 21 = 75213331 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 75213297 and 75213306.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75213331) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 106791 + ... + 107492.

It is an arithmetic number, because the mean of its divisors is an integer number (7499940).

Almost surely, 275213333 is an apocalyptic number.

It is an amenable number.

75213333 is a deficient number, since it is larger than the sum of its proper divisors (44785707).

75213333 is a wasteful number, since it uses less digits than its factorization.

75213333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214305 (or 214299 counting only the distinct ones).

The product of its digits is 5670, while the sum is 27.

The square root of 75213333 is about 8672.5620781866. The cubic root of 75213333 is about 422.1158030685.

The spelling of 75213333 in words is "seventy-five million, two hundred thirteen thousand, three hundred thirty-three".

Divisors: 1 3 9 13 27 39 117 351 214283 642849 1928547 2785679 5785641 8357037 25071111 75213333