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28747086100480 = 2115113119334259
BaseRepresentation
bin1101000100101001100111…
…10110101111100000000000
310202210012020212011001012101
412202110303312233200000
512231443013020203410
6141050121250040144
76024623410066426
oct642246366574000
9122705225131171
1028747086100480
11918363073a0a0
123283464b79054
131306ab94b8337
1471551b53d116
1534cb9ea10d3a
hex1a2533daf800

28747086100480 has 384 divisors, whose sum is σ = 77732466739200. Its totient is φ = 10108669132800.

The previous prime is 28747086100477. The next prime is 28747086100487. The reversal of 28747086100480 is 8400168074782.

It is a Harshad number since it is a multiple of its sum of digits (55).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28747086100487) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6749724591 + ... + 6749728849.

It is an arithmetic number, because the mean of its divisors is an integer number (202428298800).

Almost surely, 228747086100480 is an apocalyptic number.

28747086100480 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 28747086100480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38866233369600).

28747086100480 is an abundant number, since it is smaller than the sum of its proper divisors (48985380638720).

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

28747086100480 is a wasteful number, since it uses less digits than its factorization.

28747086100480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6261 (or 6241 counting only the distinct ones).

The product of its (nonzero) digits is 4816896, while the sum is 55.

The spelling of 28747086100480 in words is "twenty-eight trillion, seven hundred forty-seven billion, eighty-six million, one hundred thousand, four hundred eighty".