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18428054223080 = 2357127292377703
BaseRepresentation
bin1000011000010100111011…
…01000000011100011101000
32102020201000210011012220202
410030022131220003203220
54403411123340114310
6103105421540411332
73611245235255435
oct414123550034350
972221023135822
1018428054223080
115965326210687
1220975920a6b48
13a389b15b20c8
14479ccb7d6b8c
1521e5516793a5
hex10c29da038e8

18428054223080 has 64 divisors (see below), whose sum is σ = 42062534841600. Its totient is φ = 7264735582720.

The previous prime is 18428054222933. The next prime is 18428054223083. The reversal of 18428054223080 is 8032245082481.

It is not an unprimeable number, because it can be changed into a prime (18428054223083) 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, 6561509 + ... + 8939211.

It is an arithmetic number, because the mean of its divisors is an integer number (657227106900).

Almost surely, 218428054223080 is an apocalyptic number.

18428054223080 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 18428054223080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21031267420800).

18428054223080 is an abundant number, since it is smaller than the sum of its proper divisors (23634480618520).

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

18428054223080 is a wasteful number, since it uses less digits than its factorization.

18428054223080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2380514 (or 2380510 counting only the distinct ones).

The product of its (nonzero) digits is 983040, while the sum is 47.

The spelling of 18428054223080 in words is "eighteen trillion, four hundred twenty-eight billion, fifty-four million, two hundred twenty-three thousand, eighty".

Divisors: 1 2 4 5 8 10 20 40 71 142 284 355 568 710 1420 2729 2840 5458 10916 13645 21832 27290 54580 109160 193759 387518 775036 968795 1550072 1937590 2377703 3875180 4755406 7750360 9510812 11888515 19021624 23777030 47554060 95108120 168816913 337633826 675267652 844084565 1350535304 1688169130 3376338260 6488751487 6752676520 12977502974 25955005948 32443757435 51910011896 64887514870 129775029740 259550059480 460701355577 921402711154 1842805422308 2303506777885 3685610844616 4607013555770 9214027111540 18428054223080