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163042287 = 3199293079
BaseRepresentation
bin10011011011111…
…01001111101111
3102100210101222020
421231331033233
5313214323122
624102321223
74016556642
oct1155751757
9370711866
10163042287
11840400a1
1246729213
1327a17435
1417921a59
15e4a8c5c
hex9b7d3ef

163042287 has 16 divisors (see below), whose sum is σ = 229152000. Its totient is φ = 102829824.

The previous prime is 163042279. The next prime is 163042301. The reversal of 163042287 is 782240361.

It is not a de Polignac number, because 163042287 - 23 = 163042279 is a prime.

It is a super-3 number, since 3×1630422873 (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163041287) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51414 + ... + 54492.

It is an arithmetic number, because the mean of its divisors is an integer number (14322000).

Almost surely, 2163042287 is an apocalyptic number.

163042287 is a deficient number, since it is larger than the sum of its proper divisors (66109713).

163042287 is a wasteful number, since it uses less digits than its factorization.

163042287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4030.

The product of its (nonzero) digits is 16128, while the sum is 33.

The square root of 163042287 is about 12768.8013141407. The cubic root of 163042287 is about 546.3027913029.

The spelling of 163042287 in words is "one hundred sixty-three million, forty-two thousand, two hundred eighty-seven".

Divisors: 1 3 19 57 929 2787 3079 9237 17651 52953 58501 175503 2860391 8581173 54347429 163042287