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122888180 = 2256144409
BaseRepresentation
bin1110101001100…
…01111111110100
322120020100220002
413110301333310
5222424410210
620105530432
73021350402
oct724617764
9276210802
10122888180
1163404788
12351a3a18
131c5c86cc
141246c472
15abc64a5
hex7531ff4

122888180 has 12 divisors (see below), whose sum is σ = 258065220. Its totient is φ = 49155264.

The previous prime is 122888177. The next prime is 122888201. The reversal of 122888180 is 81888221.

It can be written as a sum of positive squares in 2 ways, for example, as 46185616 + 76702564 = 6796^2 + 8758^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3072185 + ... + 3072224.

It is an arithmetic number, because the mean of its divisors is an integer number (21505435).

Almost surely, 2122888180 is an apocalyptic number.

122888180 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122888180 is an abundant number, since it is smaller than the sum of its proper divisors (135177040).

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

122888180 is a wasteful number, since it uses less digits than its factorization.

122888180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6144418 (or 6144416 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 38.

The square root of 122888180 is about 11085.4941252070. The cubic root of 122888180 is about 497.1682324621.

The spelling of 122888180 in words is "one hundred twenty-two million, eight hundred eighty-eight thousand, one hundred eighty".

Divisors: 1 2 4 5 10 20 6144409 12288818 24577636 30722045 61444090 122888180