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28884206020 = 2251529994399
BaseRepresentation
bin11010111001101000…
…100000000111000100
32202112222201200210011
4122321220200013010
5433123324043040
621134052440004
72041530462115
oct327150400704
982488650704
1028884206020
111128242154a
125721319004
132954174587
14158019820c
15b40bc33ea
hex6b9a201c4

28884206020 has 24 divisors (see below), whose sum is σ = 60661440000. Its totient is φ = 11552804832.

The previous prime is 28884206017. The next prime is 28884206023. The reversal of 28884206020 is 2060248882.

It is an interprime number because it is at equal distance from previous prime (28884206017) and next prime (28884206023).

It is not an unprimeable number, because it can be changed into a prime (28884206023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 258781 + ... + 353179.

It is an arithmetic number, because the mean of its divisors is an integer number (2527560000).

Almost surely, 228884206020 is an apocalyptic number.

28884206020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28884206020 is an abundant number, since it is smaller than the sum of its proper divisors (31777233980).

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

28884206020 is a wasteful number, since it uses less digits than its factorization.

28884206020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109707 (or 109705 counting only the distinct ones).

The product of its (nonzero) digits is 98304, while the sum is 40.

The spelling of 28884206020 in words is "twenty-eight billion, eight hundred eighty-four million, two hundred six thousand, twenty".

Divisors: 1 2 4 5 10 20 15299 30598 61196 76495 94399 152990 188798 305980 377596 471995 943990 1887980 1444210301 2888420602 5776841204 7221051505 14442103010 28884206020