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128126976 = 212310427
BaseRepresentation
bin1111010001100…
…01000000000000
322221002112011120
413220301000000
5230300030401
620414112240
73114030015
oct750610000
9287075146
10128126976
116636276a
1236aab680
13207110a3
141303370c
15b3ad836
hex7a31000

128126976 has 52 divisors (see below), whose sum is σ = 341662992. Its totient is φ = 42704896.

The previous prime is 128126969. The next prime is 128126983. The reversal of 128126976 is 679621821.

It is an interprime number because it is at equal distance from previous prime (128126969) and next prime (128126983).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7075 + ... + 17501.

Almost surely, 2128126976 is an apocalyptic number.

128126976 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 128126976, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (170831496).

128126976 is an abundant number, since it is smaller than the sum of its proper divisors (213536016).

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

128126976 is an equidigital number, since it uses as much as digits as its factorization.

128126976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10454 (or 10432 counting only the distinct ones).

The product of its digits is 72576, while the sum is 42.

The square root of 128126976 is about 11319.3187074134. The cubic root of 128126976 is about 504.1350104417.

The spelling of 128126976 in words is "one hundred twenty-eight million, one hundred twenty-six thousand, nine hundred seventy-six".

Divisors: 1 2 3 4 6 8 12 16 24 32 48 64 96 128 192 256 384 512 768 1024 1536 2048 3072 4096 6144 10427 12288 20854 31281 41708 62562 83416 125124 166832 250248 333664 500496 667328 1000992 1334656 2001984 2669312 4003968 5338624 8007936 10677248 16015872 21354496 32031744 42708992 64063488 128126976