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168882139 = 478874051
BaseRepresentation
bin10100001000011…
…10111111011011
3102202210002202001
422010032333123
5321213212024
624431421431
74120321516
oct1204167733
9382702661
10168882139
1187369718
1248684877
1328cb057a
1418601d7d
15ec5e244
hexa10efdb

168882139 has 8 divisors (see below), whose sum is σ = 172712448. Its totient is φ = 165061800.

The previous prime is 168882107. The next prime is 168882149. The reversal of 168882139 is 931288861.

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

It is a cyclic number.

It is not a de Polignac number, because 168882139 - 25 = 168882107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (168882149) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39664 + ... + 43714.

It is an arithmetic number, because the mean of its divisors is an integer number (21589056).

Almost surely, 2168882139 is an apocalyptic number.

168882139 is a deficient number, since it is larger than the sum of its proper divisors (3830309).

168882139 is an equidigital number, since it uses as much as digits as its factorization.

168882139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4985.

The product of its digits is 165888, while the sum is 46.

The square root of 168882139 is about 12995.4660939883. The cubic root of 168882139 is about 552.7489254568.

The spelling of 168882139 in words is "one hundred sixty-eight million, eight hundred eighty-two thousand, one hundred thirty-nine".

Divisors: 1 47 887 4051 41689 190397 3593237 168882139