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128988148 = 22311040227
BaseRepresentation
bin1111011000000…
…11001111110100
322222201021110211
413230003033310
5231010110043
620444355204
73124244512
oct754031764
9288637424
10128988148
11668a0783
1237245b04
1320953063
14131b94b2
15b4cda9d
hex7b033f4

128988148 has 12 divisors (see below), whose sum is σ = 233011072. Its totient is φ = 62413560.

The previous prime is 128988137. The next prime is 128988149. The reversal of 128988148 is 841889821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128988149) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 519990 + ... + 520237.

Almost surely, 2128988148 is an apocalyptic number.

It is an amenable number.

128988148 is a deficient number, since it is larger than the sum of its proper divisors (104022924).

128988148 is a wasteful number, since it uses less digits than its factorization.

128988148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1040262 (or 1040260 counting only the distinct ones).

The product of its digits is 294912, while the sum is 49.

The square root of 128988148 is about 11357.2949244087. The cubic root of 128988148 is about 505.2619599623.

The spelling of 128988148 in words is "one hundred twenty-eight million, nine hundred eighty-eight thousand, one hundred forty-eight".

Divisors: 1 2 4 31 62 124 1040227 2080454 4160908 32247037 64494074 128988148