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12019162880 = 285193372
BaseRepresentation
bin10110011000110010…
…11101111100000000
31011000122011201212202
423030121131330000
5144103401203010
65304352212332
7603563125124
oct131431357400
934018151782
1012019162880
11510855aa6a
1223b523a0a8
131197113bca
148203a9584
154a52a86a5
hex2cc65df00

12019162880 has 216 divisors, whose sum is σ = 31232360880. Its totient is φ = 4431532032.

The previous prime is 12019162873. The next prime is 12019162901. The reversal of 12019162880 is 8826191021.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 324842222 + ... + 324842258.

Almost surely, 212019162880 is an apocalyptic number.

12019162880 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 12019162880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15616180440).

12019162880 is an abundant number, since it is smaller than the sum of its proper divisors (19213198000).

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

12019162880 is an frugal number, since it uses more digits than its factorization.

12019162880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152 (or 63 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 38.

The spelling of 12019162880 in words is "twelve billion, nineteen million, one hundred sixty-two thousand, eight hundred eighty".