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128045204 = 22739711519
BaseRepresentation
bin1111010000111…
…01000010010100
322220221100222222
413220131002110
5230234421304
620412241512
73113236430
oct750350224
9286840888
10128045204
1166307291
1236a70298
13206b2ac1
14130119c0
15b3944be
hex7a1d094

128045204 has 24 divisors (see below), whose sum is σ = 256757760. Its totient is φ = 54733536.

The previous prime is 128045167. The next prime is 128045219. The reversal of 128045204 is 402540821.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5357 + ... + 16875.

It is an arithmetic number, because the mean of its divisors is an integer number (10698240).

Almost surely, 2128045204 is an apocalyptic number.

128045204 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

128045204 is an abundant number, since it is smaller than the sum of its proper divisors (128712556).

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

128045204 is a wasteful number, since it uses less digits than its factorization.

128045204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11927 (or 11925 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 26.

The square root of 128045204 is about 11315.7060760697. The cubic root of 128045204 is about 504.0277395079.

The spelling of 128045204 in words is "one hundred twenty-eight million, forty-five thousand, two hundred four".

Divisors: 1 2 4 7 14 28 397 794 1588 2779 5558 11116 11519 23038 46076 80633 161266 322532 4573043 9146086 18292172 32011301 64022602 128045204