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128714808 = 23323251929
BaseRepresentation
bin1111010110000…
…00100000111000
322222012101112010
413223000200320
5230422333213
620434445520
73122025555
oct753004070
9288171463
10128714808
1166724382
12371338a0
1320888811
1413147a2c
15b477ac3
hex7ac0838

128714808 has 64 divisors (see below), whose sum is σ = 337478400. Its totient is φ = 40832000.

The previous prime is 128714777. The next prime is 128714849. The reversal of 128714808 is 808417821.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 138088 + ... + 139016.

It is an arithmetic number, because the mean of its divisors is an integer number (5273100).

Almost surely, 2128714808 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 128714808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (168739200).

128714808 is an abundant number, since it is smaller than the sum of its proper divisors (208763592).

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

128714808 is a wasteful number, since it uses less digits than its factorization.

128714808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1212 (or 1208 counting only the distinct ones).

The product of its (nonzero) digits is 28672, while the sum is 39.

The square root of 128714808 is about 11345.2548671240. The cubic root of 128714808 is about 504.9048057668.

The spelling of 128714808 in words is "one hundred twenty-eight million, seven hundred fourteen thousand, eight hundred eight".

Divisors: 1 2 3 4 6 8 12 23 24 46 69 92 138 184 251 276 502 552 753 929 1004 1506 1858 2008 2787 3012 3716 5574 5773 6024 7432 11148 11546 17319 21367 22296 23092 34638 42734 46184 64101 69276 85468 128202 138552 170936 233179 256404 466358 512808 699537 932716 1399074 1865432 2798148 5363117 5596296 10726234 16089351 21452468 32178702 42904936 64357404 128714808