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180420054 = 23139227953
BaseRepresentation
bin10101100000011…
…11110111010110
3110120111021210020
422300033313112
5332141420204
625523010010
74320354663
oct1260176726
9416437706
10180420054
119292a291
1250509906
132b4c0139
1419d66a6a
1510c8cbd9
hexac0fdd6

180420054 has 32 divisors (see below), whose sum is σ = 365420160. Its totient is φ = 59381952.

The previous prime is 180420047. The next prime is 180420061. The reversal of 180420054 is 450024081.

It is an interprime number because it is at equal distance from previous prime (180420047) and next prime (180420061).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 188842 + ... + 189794.

It is an arithmetic number, because the mean of its divisors is an integer number (11419380).

Almost surely, 2180420054 is an apocalyptic number.

180420054 is an abundant number, since it is smaller than the sum of its proper divisors (185000106).

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

180420054 is a wasteful number, since it uses less digits than its factorization.

180420054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1324.

The product of its (nonzero) digits is 1280, while the sum is 24.

The square root of 180420054 is about 13432.0532309845. The cubic root of 180420054 is about 565.0604827308.

The spelling of 180420054 in words is "one hundred eighty million, four hundred twenty thousand, fifty-four".

Divisors: 1 2 3 6 139 227 278 417 454 681 834 953 1362 1906 2859 5718 31553 63106 94659 132467 189318 216331 264934 397401 432662 648993 794802 1297986 30070009 60140018 90210027 180420054