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128628453360 = 24351148722899
BaseRepresentation
bin111011111001011011…
…0100110111111110000
3110022000100010110100010
41313302312212333300
54101412341001420
6135031402054520
712202350546051
oct1676266467760
9408010113303
10128628453360
114a607454910
1220b194aa440
13c18b9a9084
146323282728
15352c73e4e0
hex1df2da6ff0

128628453360 has 80 divisors (see below), whose sum is σ = 434998051200. Its totient is φ = 31182654720.

The previous prime is 128628453323. The next prime is 128628453367. The reversal of 128628453360 is 63354826821.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128628453367) 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, 24358810 + ... + 24364089.

It is an arithmetic number, because the mean of its divisors is an integer number (5437475640).

Almost surely, 2128628453360 is an apocalyptic number.

128628453360 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

128628453360 is an abundant number, since it is smaller than the sum of its proper divisors (306369597840).

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

128628453360 is a wasteful number, since it uses less digits than its factorization.

128628453360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48722926 (or 48722920 counting only the distinct ones).

The product of its (nonzero) digits is 1658880, while the sum is 48.

The spelling of 128628453360 in words is "one hundred twenty-eight billion, six hundred twenty-eight million, four hundred fifty-three thousand, three hundred sixty".

Divisors: 1 2 3 4 5 6 8 10 11 12 15 16 20 22 24 30 33 40 44 48 55 60 66 80 88 110 120 132 165 176 220 240 264 330 440 528 660 880 1320 2640 48722899 97445798 146168697 194891596 243614495 292337394 389783192 487228990 535951889 584674788 730843485 779566384 974457980 1071903778 1169349576 1461686970 1607855667 1948915960 2143807556 2338699152 2679759445 2923373940 3215711334 3897831920 4287615112 5359518890 5846747880 6431422668 8039278335 8575230224 10719037780 11693495760 12862845336 16078556670 21438075560 25725690672 32157113340 42876151120 64314226680 128628453360