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167143028 = 22132972549
BaseRepresentation
bin10011111011001…
…10011001110100
3102122111202010112
421331212121310
5320242034103
624330242152
74066456313
oct1175463164
9378452115
10167143028
1186391038
1247b86358
1328821b00
14182ac27a
15ea18cd8
hex9f66674

167143028 has 36 divisors (see below), whose sum is σ = 320121900. Its totient is φ = 76317696.

The previous prime is 167143013. The next prime is 167143069. The reversal of 167143028 is 820341761.

It can be written as a sum of positive squares in 6 ways, for example, as 4376464 + 162766564 = 2092^2 + 12758^2 .

It is a junction number, because it is equal to n+sod(n) for n = 167142985 and 167143003.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 64298 + ... + 66846.

It is an arithmetic number, because the mean of its divisors is an integer number (8892275).

Almost surely, 2167143028 is an apocalyptic number.

It is an amenable number.

167143028 is a deficient number, since it is larger than the sum of its proper divisors (152978872).

167143028 is a wasteful number, since it uses less digits than its factorization.

167143028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2676 (or 2661 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 167143028 is about 12928.3807184040. The cubic root of 167143028 is about 550.8450129139.

Adding to 167143028 its reverse (820341761), we get a palindrome (987484789).

The spelling of 167143028 in words is "one hundred sixty-seven million, one hundred forty-three thousand, twenty-eight".

Divisors: 1 2 4 13 26 52 97 169 194 338 388 676 1261 2522 2549 5044 5098 10196 16393 32786 33137 65572 66274 132548 247253 430781 494506 861562 989012 1723124 3214289 6428578 12857156 41785757 83571514 167143028