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120080020 = 2256004001
BaseRepresentation
bin1110010100001…
…00011010010100
322100221200211011
413022010122110
5221220030040
615525422004
72655443344
oct712043224
9270850734
10120080020
1161866995
123426a904
131bb54488
1411d3ad24
15a81e3ea
hex7284694

120080020 has 12 divisors (see below), whose sum is σ = 252168084. Its totient is φ = 48032000.

The previous prime is 120080003. The next prime is 120080041. The reversal of 120080020 is 20080021.

It can be written as a sum of positive squares in 2 ways, for example, as 92852496 + 27227524 = 9636^2 + 5218^2 .

It is a super-2 number, since 2×1200800202 = 28838422406400800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3001981 + ... + 3002020.

It is an arithmetic number, because the mean of its divisors is an integer number (21014007).

Almost surely, 2120080020 is an apocalyptic number.

120080020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120080020 is an abundant number, since it is smaller than the sum of its proper divisors (132088064).

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

120080020 is a wasteful number, since it uses less digits than its factorization.

120080020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6004010 (or 6004008 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 120080020 is about 10958.1029380089. The cubic root of 120080020 is about 493.3520273332.

Subtracting from 120080020 its reverse (20080021), we obtain a palindrome (99999999).

The spelling of 120080020 in words is "one hundred twenty million, eighty thousand, twenty".

Divisors: 1 2 4 5 10 20 6004001 12008002 24016004 30020005 60040010 120080020