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83168039 = 653127363
BaseRepresentation
bin1001111010100…
…00101100100111
312210111101002202
410331100230213
5132242334124
612130325115
72026626263
oct475205447
9183441082
1083168039
1142a45419
1223a2979b
13142cc376
14b08d0a3
15747c5ae
hex4f50b27

83168039 has 4 divisors (see below), whose sum is σ = 83296056. Its totient is φ = 83040024.

The previous prime is 83168017. The next prime is 83168083. The reversal of 83168039 is 93086138.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93086138 = 246543069.

It is a cyclic number.

It is not a de Polignac number, because 83168039 - 224 = 66390823 is a prime.

It is a super-2 number, since 2×831680392 = 13833845422211042, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 83167993 and 83168011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83168089) 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, 63029 + ... + 64334.

It is an arithmetic number, because the mean of its divisors is an integer number (20824014).

Almost surely, 283168039 is an apocalyptic number.

83168039 is a deficient number, since it is larger than the sum of its proper divisors (128017).

83168039 is a wasteful number, since it uses less digits than its factorization.

83168039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128016.

The product of its (nonzero) digits is 31104, while the sum is 38.

The square root of 83168039 is about 9119.6512542970. The cubic root of 83168039 is about 436.5012454112.

The spelling of 83168039 in words is "eighty-three million, one hundred sixty-eight thousand, thirty-nine".

Divisors: 1 653 127363 83168039