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28612043288 = 2319917972389
BaseRepresentation
bin11010101001011010…
…010010001000011000
32201212000121101200222
4122221122102020120
5432044140341123
621051051215212
72032014232553
oct325132221030
981760541628
1028612043288
1111152830674
125666147508
13290c97223a
141555d8d69a
15b26d626c8
hex6a9692218

28612043288 has 16 divisors (see below), whose sum is σ = 53917170000. Its totient is φ = 14234131296.

The previous prime is 28612043287. The next prime is 28612043359. The reversal of 28612043288 is 88234021682.

It is a super-3 number, since 3×286120432883 (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28612043287) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8984603 + ... + 8987786.

It is an arithmetic number, because the mean of its divisors is an integer number (3369823125).

Almost surely, 228612043288 is an apocalyptic number.

It is an amenable number.

28612043288 is a deficient number, since it is larger than the sum of its proper divisors (25305126712).

28612043288 is a wasteful number, since it uses less digits than its factorization.

28612043288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17972594 (or 17972590 counting only the distinct ones).

The product of its (nonzero) digits is 294912, while the sum is 44.

The spelling of 28612043288 in words is "twenty-eight billion, six hundred twelve million, forty-three thousand, two hundred eighty-eight".

Divisors: 1 2 4 8 199 398 796 1592 17972389 35944778 71889556 143779112 3576505411 7153010822 14306021644 28612043288