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28486748799 = 323165194311
BaseRepresentation
bin11010100001111100…
…010100101001111111
32201112021211202222100
4122201330110221333
5431320101430144
621030413520143
72025633240525
oct324174245177
981467752870
1028486748799
1111099033003
1256301a3053
1328bca134a2
141543496315
15b1ad63269
hex6a1f14a7f

28486748799 has 6 divisors (see below), whose sum is σ = 41147526056. Its totient is φ = 18991165860.

The previous prime is 28486748789. The next prime is 28486748839. The reversal of 28486748799 is 99784768482.

28486748799 is a `hidden beast` number, since 2 + 8 + 486 + 74 + 8 + 79 + 9 = 666.

It is not a de Polignac number, because 28486748799 - 215 = 28486716031 is a prime.

It is a super-2 number, since 2×284867487992 (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28486748729) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1582597147 + ... + 1582597164.

Almost surely, 228486748799 is an apocalyptic number.

28486748799 is a deficient number, since it is larger than the sum of its proper divisors (12660777257).

28486748799 is a wasteful number, since it uses less digits than its factorization.

28486748799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3165194317 (or 3165194314 counting only the distinct ones).

The product of its digits is 390168576, while the sum is 72.

The spelling of 28486748799 in words is "twenty-eight billion, four hundred eighty-six million, seven hundred forty-eight thousand, seven hundred ninety-nine".

Divisors: 1 3 9 3165194311 9495582933 28486748799