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16144831 = 312412161
BaseRepresentation
bin111101100101…
…100110111111
31010101020112201
4331211212333
513113113311
61334012331
7254141323
oct75454677
933336481
1016144831
11912793a
1254a70a7
133463771
142203983
15163d9c1
hexf659bf

16144831 has 8 divisors (see below), whose sum is σ = 16742528. Its totient is φ = 15552000.

The previous prime is 16144811. The next prime is 16144837. The reversal of 16144831 is 13844161.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a 9-Lehmer number, since φ(16144831) divides (16144831-1)9.

It is a cyclic number.

It is not a de Polignac number, because 16144831 - 211 = 16142783 is a prime.

It is a super-2 number, since 2×161448312 = 521311136037122, which contains 22 as substring.

It is a deceptive number, since it divides R16144830.

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 16144831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16144837) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6391 + ... + 8551.

It is an arithmetic number, because the mean of its divisors is an integer number (2092816).

Almost surely, 216144831 is an apocalyptic number.

16144831 is a deficient number, since it is larger than the sum of its proper divisors (597697).

16144831 is a wasteful number, since it uses less digits than its factorization.

16144831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2433.

The product of its digits is 2304, while the sum is 28.

The square root of 16144831 is about 4018.0630905948. The cubic root of 16144831 is about 252.7422424448.

Adding to 16144831 its reverse (13844161), we get a palindrome (29988992).

The spelling of 16144831 in words is "sixteen million, one hundred forty-four thousand, eight hundred thirty-one".

Divisors: 1 31 241 2161 7471 66991 520801 16144831