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8280105742080 = 28345293272567
BaseRepresentation
bin111100001111101110011…
…0000101110111100000000
31002022120101210202102020000
41320133130300232330000
52041130124032221310
625335454510120000
71513134511353624
oct170373460567400
932276353672200
108280105742080
112702633914067
12b188a67b0000
13480a6cc1c403
14208a8b583184
15e55b7ce44c0
hex787dcc2ef00

8280105742080 has 360 divisors, whose sum is σ = 29728960142112. Its totient is φ = 2200484192256.

The previous prime is 8280105742057. The next prime is 8280105742127. The reversal of 8280105742080 is 802475010828.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (360).

It is a super-2 number, since 2×82801057420802 (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 30241957 + ... + 30514523.

Almost surely, 28280105742080 is an apocalyptic number.

8280105742080 is a gapful number since it is divisible by the number (80) 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 8280105742080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14864480071056).

8280105742080 is an abundant number, since it is smaller than the sum of its proper divisors (21448854400032).

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

8280105742080 is a wasteful number, since it uses less digits than its factorization.

8280105742080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272893 (or 272870 counting only the distinct ones).

The product of its (nonzero) digits is 286720, while the sum is 45.

The spelling of 8280105742080 in words is "eight trillion, two hundred eighty billion, one hundred five million, seven hundred forty-two thousand, eighty".