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16882031 = 29582139
BaseRepresentation
bin100000001100…
…1100101101111
31011202200210102
41000121211233
513310211111
61401501315
7263331515
oct100314557
934680712
1016882031
1195907a1
1257a183b
13366118a
1423564b5
15173713b
hex101996f

16882031 has 4 divisors (see below), whose sum is σ = 17464200. Its totient is φ = 16299864.

The previous prime is 16882007. The next prime is 16882039. The reversal of 16882031 is 13028861.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13028861 = 18617001.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-16882031 is a prime.

It is a super-2 number, since 2×168820312 = 570005941369922, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (29), and also a Moran number because the ratio is a prime number: 582139 = 16882031 / (1 + 6 + 8 + 8 + 2 + 0 + 3 + 1).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16881985 and 16882003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16882039) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 291041 + ... + 291098.

It is an arithmetic number, because the mean of its divisors is an integer number (4366050).

Almost surely, 216882031 is an apocalyptic number.

16882031 is the 1838-th centered decagonal number.

16882031 is a deficient number, since it is larger than the sum of its proper divisors (582169).

16882031 is an equidigital number, since it uses as much as digits as its factorization.

16882031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 582168.

The product of its (nonzero) digits is 2304, while the sum is 29.

The square root of 16882031 is about 4108.7748782332. The cubic root of 16882031 is about 256.5320102874.

The spelling of 16882031 in words is "sixteen million, eight hundred eighty-two thousand, thirty-one".

Divisors: 1 29 582139 16882031