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2150180 = 225107509
BaseRepresentation
bin1000001100111100100100
311001020111022
420030330210
51022301210
6114030312
724163514
oct10147444
94036438
102150180
11123950a
12878398
135a38c6
143dd844
152c7155
hex20cf24

2150180 has 12 divisors (see below), whose sum is σ = 4515420. Its totient is φ = 860064.

The previous prime is 2150171. The next prime is 2150207. The reversal of 2150180 is 810512.

It can be written as a sum of positive squares in 2 ways, for example, as 729316 + 1420864 = 854^2 + 1192^2 .

It is an Ulam number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53735 + ... + 53774.

It is an arithmetic number, because the mean of its divisors is an integer number (376285).

22150180 is an apocalyptic number.

2150180 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2150180 is an abundant number, since it is smaller than the sum of its proper divisors (2365240).

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

2150180 is a wasteful number, since it uses less digits than its factorization.

2150180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107518 (or 107516 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 17.

The square root of 2150180 is about 1466.3492080674. The cubic root of 2150180 is about 129.0698898168.

Adding to 2150180 its reverse (810512), we get a palindrome (2960692).

The spelling of 2150180 in words is "two million, one hundred fifty thousand, one hundred eighty".

Divisors: 1 2 4 5 10 20 107509 215018 430036 537545 1075090 2150180