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1530072180 = 2234571397107
BaseRepresentation
bin101101100110011…
…0000110001110100
310221122002201110000
41123030300301310
511113144302210
6411454431300
752626253560
oct13314606164
93848081400
101530072180
1171575a96a
12368502530
131b4cc1070
141072d06a0
158e4d9ac0
hex5b330c74

1530072180 has 480 divisors, whose sum is σ = 6024243456. Its totient is φ = 316514304.

The previous prime is 1530072163. The next prime is 1530072191. The reversal of 1530072180 is 812700351.

It is a super-2 number, since 2×15300721802 = 4682241752019904800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 14299687 + ... + 14299793.

Almost surely, 21530072180 is an apocalyptic number.

1530072180 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1530072180, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3012121728).

1530072180 is an abundant number, since it is smaller than the sum of its proper divisors (4494171276).

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

1530072180 is a wasteful number, since it uses less digits than its factorization.

1530072180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245 (or 234 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 27.

The square root of 1530072180 is about 39116.1370792158. The cubic root of 1530072180 is about 1152.3134726354.

The spelling of 1530072180 in words is "one billion, five hundred thirty million, seventy-two thousand, one hundred eighty".