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28494912078360 = 233257131018611961
BaseRepresentation
bin1100111101010011111010…
…00111001100001000011000
310201220002100102020102101100
412132221331013030020120
512213330034443001420
6140334214253351400
76000455325214650
oct636517507141030
9121802312212340
1028494912078360
119096696009952
123242608498560
1312b909bbc2130
147072380d3360
15346340e0c190
hex19ea7d1cc218

28494912078360 has 384 divisors, whose sum is σ = 115108173048960. Its totient is φ = 5952586752000.

The previous prime is 28494912078313. The next prime is 28494912078361. The reversal of 28494912078360 is 6387021949482.

28494912078360 is a `hidden beast` number, since 2 + 8 + 4 + 9 + 491 + 2 + 0 + 7 + 83 + 60 = 666.

It is a super-2 number, since 2×284949120783602 (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28494912078361) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 997221 + ... + 7614740.

It is an arithmetic number, because the mean of its divisors is an integer number (299760867315).

Almost surely, 228494912078360 is an apocalyptic number.

28494912078360 is a gapful number since it is divisible by the number (20) 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 28494912078360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57554086524480).

28494912078360 is an abundant number, since it is smaller than the sum of its proper divisors (86613260970600).

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

28494912078360 is a wasteful number, since it uses less digits than its factorization.

28494912078360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8612099 (or 8612092 counting only the distinct ones).

The product of its (nonzero) digits is 41803776, while the sum is 63.

The spelling of 28494912078360 in words is "twenty-eight trillion, four hundred ninety-four billion, nine hundred twelve million, seventy-eight thousand, three hundred sixty".