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2912020 = 225145601
BaseRepresentation
bin1011000110111100010100
312110221112121
423012330110
51221141040
6142225324
733515566
oct13067424
95427477
102912020
111709931
12b85244
137ac5b7
1455b336
153c7c4a
hex2c6f14

2912020 has 12 divisors (see below), whose sum is σ = 6115284. Its totient is φ = 1164800.

The previous prime is 2912009. The next prime is 2912023. The reversal of 2912020 is 202192.

It is a happy number.

2912020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 1887876 + 1024144 = 1374^2 + 1012^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2911985 and 2912003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2912023) by changing a digit.

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, 72781 + ... + 72820.

It is an arithmetic number, because the mean of its divisors is an integer number (509607).

22912020 is an apocalyptic number.

2912020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2912020 is an abundant number, since it is smaller than the sum of its proper divisors (3203264).

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

2912020 is a wasteful number, since it uses less digits than its factorization.

2912020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145610 (or 145608 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 2912020 is about 1706.4641806964. The cubic root of 2912020 is about 142.8010665625.

The spelling of 2912020 in words is "two million, nine hundred twelve thousand, twenty".

Divisors: 1 2 4 5 10 20 145601 291202 582404 728005 1456010 2912020