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180042373 = 7107271887
BaseRepresentation
bin10101011101100…
…11101010000101
3110112210002201001
422232303222011
5332042323443
625510533301
74314222610
oct1256635205
9415702631
10180042373
11926a1555
1250367231
132b3ba264
1419ca9177
1510c15d4d
hexabb3a85

180042373 has 16 divisors (see below), whose sum is σ = 208687104. Its totient is φ = 152143920.

The previous prime is 180042371. The next prime is 180042377. The reversal of 180042373 is 373240081.

It is a cyclic number.

It is not a de Polignac number, because 180042373 - 21 = 180042371 is a prime.

It is a super-2 number, since 2×1800423732 = 64830512150942258, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (180042371) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 202536 + ... + 203422.

It is an arithmetic number, because the mean of its divisors is an integer number (13042944).

Almost surely, 2180042373 is an apocalyptic number.

It is an amenable number.

180042373 is a deficient number, since it is larger than the sum of its proper divisors (28644731).

180042373 is a wasteful number, since it uses less digits than its factorization.

180042373 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1272.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 180042373 is about 13417.9869205481. The cubic root of 180042373 is about 564.6659188744.

The spelling of 180042373 in words is "one hundred eighty million, forty-two thousand, three hundred seventy-three".

Divisors: 1 7 107 271 749 887 1897 6209 28997 94909 202979 240377 664363 1682639 25720339 180042373