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3028279380 = 2235721030027
BaseRepresentation
bin1011010001111111…
…1110000001010100
321211001020112100120
42310133332001110
522200214420010
61220254311540
7135020643600
oct26437760124
97731215316
103028279380
111314426135
127061b85b0
133935062b9
1420a288500
1512accce70
hexb47fe054

3028279380 has 72 divisors (see below), whose sum is σ = 9863548128. Its totient is φ = 692177472.

The previous prime is 3028279369. The next prime is 3028279381. The reversal of 3028279380 is 839728203.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3028279381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 512074 + ... + 517953.

It is an arithmetic number, because the mean of its divisors is an integer number (136993724).

Almost surely, 23028279380 is an apocalyptic number.

3028279380 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3028279380 is an abundant number, since it is smaller than the sum of its proper divisors (6835268748).

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

3028279380 is a wasteful number, since it uses less digits than its factorization.

3028279380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1030053 (or 1030044 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 42.

The square root of 3028279380 is about 55029.8044699416. The cubic root of 3028279380 is about 1446.7671741941.

The spelling of 3028279380 in words is "three billion, twenty-eight million, two hundred seventy-nine thousand, three hundred eighty".

Divisors: 1 2 3 4 5 6 7 10 12 14 15 20 21 28 30 35 42 49 60 70 84 98 105 140 147 196 210 245 294 420 490 588 735 980 1470 2940 1030027 2060054 3090081 4120108 5150135 6180162 7210189 10300270 12360324 14420378 15450405 20600540 21630567 28840756 30900810 36050945 43261134 50471323 61801620 72101890 86522268 100942646 108152835 144203780 151413969 201885292 216305670 252356615 302827938 432611340 504713230 605655876 757069845 1009426460 1514139690 3028279380