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402080120 = 23513773231
BaseRepresentation
bin10111111101110…
…100000101111000
31001000120210020022
4113331310011320
51310413030440
6103521550012
712651424151
oct2775640570
91030523208
10402080120
11196a66822
12b27a5308
13653bc340
143b586928
1525474cb5
hex17f74178

402080120 has 32 divisors (see below), whose sum is σ = 974272320. Its totient is φ = 148460160.

The previous prime is 402080111. The next prime is 402080167. The reversal of 402080120 is 21080204.

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 7 ways as a sum of consecutive naturals, for example, 386096 + ... + 387135.

It is an arithmetic number, because the mean of its divisors is an integer number (30446010).

Almost surely, 2402080120 is an apocalyptic number.

402080120 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

402080120 is an abundant number, since it is smaller than the sum of its proper divisors (572192200).

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

402080120 is a wasteful number, since it uses less digits than its factorization.

402080120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 773255 (or 773251 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 402080120 is about 20051.9355674209. The cubic root of 402080120 is about 738.0812967533.

The spelling of 402080120 in words is "four hundred two million, eighty thousand, one hundred twenty".

Divisors: 1 2 4 5 8 10 13 20 26 40 52 65 104 130 260 520 773231 1546462 3092924 3866155 6185848 7732310 10052003 15464620 20104006 30929240 40208012 50260015 80416024 100520030 201040060 402080120