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128344044 = 22311394649
BaseRepresentation
bin1111010011001…
…01111111101100
322221111112221010
413221211333230
5230324002134
620422505220
73115622613
oct751457754
9287445833
10128344044
11664a0864
1236b95210
1320788b2a
141308c87a
15b402ce9
hex7a65fec

128344044 has 24 divisors (see below), whose sum is σ = 302122800. Its totient is φ = 42402304.

The previous prime is 128344043. The next prime is 128344109. The reversal of 128344044 is 440443821.

It is not an unprimeable number, because it can be changed into a prime (128344043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45969 + ... + 48680.

It is an arithmetic number, because the mean of its divisors is an integer number (12588450).

Almost surely, 2128344044 is an apocalyptic number.

It is an amenable number.

128344044 is an abundant number, since it is smaller than the sum of its proper divisors (173778756).

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

128344044 is a wasteful number, since it uses less digits than its factorization.

128344044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94769 (or 94767 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 30.

The square root of 128344044 is about 11328.9030360402. The cubic root of 128344044 is about 504.4195454700.

Adding to 128344044 its reverse (440443821), we get a palindrome (568787865).

The spelling of 128344044 in words is "one hundred twenty-eight million, three hundred forty-four thousand, forty-four".

Divisors: 1 2 3 4 6 12 113 226 339 452 678 1356 94649 189298 283947 378596 567894 1135788 10695337 21390674 32086011 42781348 64172022 128344044