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155782068 = 223133132213
BaseRepresentation
bin10010100100100…
…00101110110100
3101212010112211020
421102100232310
5304340011233
623242541140
73601061061
oct1122205664
9355115736
10155782068
117aa31412
12442077b0
1326374950
1416991c68
15da229b3
hex9490bb4

155782068 has 48 divisors (see below), whose sum is σ = 404092416. Its totient is φ = 46385280.

The previous prime is 155782063. The next prime is 155782087. The reversal of 155782068 is 860287551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155782061) 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, 11271 + ... + 20942.

It is an arithmetic number, because the mean of its divisors is an integer number (8418592).

Almost surely, 2155782068 is an apocalyptic number.

It is an amenable number.

155782068 is an abundant number, since it is smaller than the sum of its proper divisors (248310348).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

155782068 is a wasteful number, since it uses less digits than its factorization.

155782068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32264 (or 32262 counting only the distinct ones).

The product of its (nonzero) digits is 134400, while the sum is 42.

The square root of 155782068 is about 12481.2686855143. The cubic root of 155782068 is about 538.0704661182.

The spelling of 155782068 in words is "one hundred fifty-five million, seven hundred eighty-two thousand, sixty-eight".

Divisors: 1 2 3 4 6 12 13 26 31 39 52 62 78 93 124 156 186 372 403 806 1209 1612 2418 4836 32213 64426 96639 128852 193278 386556 418769 837538 998603 1256307 1675076 1997206 2512614 2995809 3994412 5025228 5991618 11983236 12981839 25963678 38945517 51927356 77891034 155782068