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69948133 = 174740039
BaseRepresentation
bin1000010101101…
…01001011100101
311212121201210121
410022311023211
5120401320013
610535121541
71506356263
oct412651345
9155551717
1069948133
1136536082
121b5132b1
1311651038
14940b433
15621a58d
hex42b52e5

69948133 has 4 divisors (see below), whose sum is σ = 69989920. Its totient is φ = 69906348.

The previous prime is 69948127. The next prime is 69948161. The reversal of 69948133 is 33184996.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 69948133 - 29 = 69947621 is a prime.

It is the 8364-th Hogben number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 69948133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69948103) by changing a digit.

It is a nontrivial repunit in base 8363.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18273 + ... + 21766.

It is an arithmetic number, because the mean of its divisors is an integer number (17497480).

Almost surely, 269948133 is an apocalyptic number.

It is an amenable number.

69948133 is a deficient number, since it is larger than the sum of its proper divisors (41787).

69948133 is a wasteful number, since it uses less digits than its factorization.

69948133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41786.

The product of its digits is 139968, while the sum is 43.

The square root of 69948133 is about 8363.5000448377. The cubic root of 69948133 is about 412.0267149705.

The spelling of 69948133 in words is "sixty-nine million, nine hundred forty-eight thousand, one hundred thirty-three".

Divisors: 1 1747 40039 69948133