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128227852 = 22231393781
BaseRepresentation
bin1111010010010…
…01101000001100
322221021122112201
413221021220030
5230311242402
620420211244
73114630064
oct751115014
9287248481
10128227852
1166421535
1236b39b24
1320747c8c
141305c3a4
15b3cd687
hex7a49a0c

128227852 has 12 divisors (see below), whose sum is σ = 234155376. Its totient is φ = 61326320.

The previous prime is 128227843. The next prime is 128227867. The reversal of 128227852 is 258722821.

It is a happy number.

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, 696799 + ... + 696982.

It is an arithmetic number, because the mean of its divisors is an integer number (19512948).

Almost surely, 2128227852 is an apocalyptic number.

It is an amenable number.

128227852 is a deficient number, since it is larger than the sum of its proper divisors (105927524).

128227852 is a wasteful number, since it uses less digits than its factorization.

128227852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1393808 (or 1393806 counting only the distinct ones).

The product of its digits is 35840, while the sum is 37.

The square root of 128227852 is about 11323.7737525968. The cubic root of 128227852 is about 504.2672797068.

The spelling of 128227852 in words is "one hundred twenty-eight million, two hundred twenty-seven thousand, eight hundred fifty-two".

Divisors: 1 2 4 23 46 92 1393781 2787562 5575124 32056963 64113926 128227852