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72482120 = 2351812053
BaseRepresentation
bin1000101000111…
…11110101001000
312001101110202222
410110133311020
5122023411440
611105313212
71540042064
oct424376510
9161343688
1072482120
1137a06987
1220335808
131202a539
1498aaaa4
15656b2b5
hex451fd48

72482120 has 16 divisors (see below), whose sum is σ = 163084860. Its totient is φ = 28992832.

The previous prime is 72482119. The next prime is 72482143. The reversal of 72482120 is 2128427.

It can be written as a sum of positive squares in 2 ways, for example, as 72148036 + 334084 = 8494^2 + 578^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 72482120.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 905987 + ... + 906066.

Almost surely, 272482120 is an apocalyptic number.

It is an amenable number.

72482120 is an abundant number, since it is smaller than the sum of its proper divisors (90602740).

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

72482120 is a wasteful number, since it uses less digits than its factorization.

72482120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1812064 (or 1812060 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 26.

The square root of 72482120 is about 8513.6431684679. The cubic root of 72482120 is about 416.9432645219.

It can be divided in two parts, 724821 and 20, that multiplied together give a triangular number (14496420 = T5384).

The spelling of 72482120 in words is "seventy-two million, four hundred eighty-two thousand, one hundred twenty".

Divisors: 1 2 4 5 8 10 20 40 1812053 3624106 7248212 9060265 14496424 18120530 36241060 72482120