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70181441 = 1123713907
BaseRepresentation
bin1000010111011…
…10001001000001
311220001120211122
410023232021001
5120431301231
610544122025
71511350421
oct413561101
9156046748
1070181441
11366853a0
121b606315
13117032a5
14946c481
15626477b
hex42ee241

70181441 has 16 divisors (see below), whose sum is σ = 81036288. Its totient is φ = 60152400.

The previous prime is 70181437. The next prime is 70181471. The reversal of 70181441 is 14418107.

It is not a de Polignac number, because 70181441 - 22 = 70181437 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 70181441.

It is not an unprimeable number, because it can be changed into a prime (70181471) 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, 16010 + ... + 19916.

It is an arithmetic number, because the mean of its divisors is an integer number (5064768).

Almost surely, 270181441 is an apocalyptic number.

70181441 is a gapful number since it is divisible by the number (71) formed by its first and last digit.

It is an amenable number.

70181441 is a deficient number, since it is larger than the sum of its proper divisors (10854847).

70181441 is a wasteful number, since it uses less digits than its factorization.

70181441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4012.

The product of its (nonzero) digits is 896, while the sum is 26.

The square root of 70181441 is about 8377.4364217223. The cubic root of 70181441 is about 412.4843037798.

Adding to 70181441 its reverse (14418107), we get a palindrome (84599548).

The spelling of 70181441 in words is "seventy million, one hundred eighty-one thousand, four hundred forty-one".

Divisors: 1 11 23 71 253 781 1633 3907 17963 42977 89861 277397 988471 3051367 6380131 70181441