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2028953220 = 223574830841
BaseRepresentation
bin111100011101111…
…0101111010000100
312020101211111120120
41320323311322010
513123403000340
6533155301540
7101164550340
oct17073657204
95211744516
102028953220
11951322648
124875aa8b0
13264473a48
14153674620
15bd1d14d0
hex78ef5e84

2028953220 has 48 divisors (see below), whose sum is σ = 6492651648. Its totient is φ = 463760640.

The previous prime is 2028953197. The next prime is 2028953221. The reversal of 2028953220 is 223598202.

It is not an unprimeable number, because it can be changed into a prime (2028953221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2415001 + ... + 2415840.

It is an arithmetic number, because the mean of its divisors is an integer number (135263576).

Almost surely, 22028953220 is an apocalyptic number.

2028953220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2028953220 is an abundant number, since it is smaller than the sum of its proper divisors (4463698428).

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

2028953220 is a wasteful number, since it uses less digits than its factorization.

2028953220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4830860 (or 4830858 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 2028953220 is about 45043.9032500515. The cubic root of 2028953220 is about 1265.9717405450.

The spelling of 2028953220 in words is "two billion, twenty-eight million, nine hundred fifty-three thousand, two hundred twenty".

Divisors: 1 2 3 4 5 6 7 10 12 14 15 20 21 28 30 35 42 60 70 84 105 140 210 420 4830841 9661682 14492523 19323364 24154205 28985046 33815887 48308410 57970092 67631774 72462615 96616820 101447661 135263548 144925230 169079435 202895322 289850460 338158870 405790644 507238305 676317740 1014476610 2028953220