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128800010 = 2512880001
BaseRepresentation
bin1111010110101…
…01010100001010
322222100201101202
413223111110022
5230433100020
620440344202
73122532143
oct753252412
9288321352
10128800010
1166782399
1237175062
13208b8531
141316aaca
15b492e75
hex7ad550a

128800010 has 8 divisors (see below), whose sum is σ = 231840036. Its totient is φ = 51520000.

The previous prime is 128799967. The next prime is 128800013. The reversal of 128800010 is 10008821.

It can be written as a sum of positive squares in 2 ways, for example, as 124835929 + 3964081 = 11173^2 + 1991^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (128800013) 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, 6439991 + ... + 6440010.

Almost surely, 2128800010 is an apocalyptic number.

128800010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

128800010 is a deficient number, since it is larger than the sum of its proper divisors (103040026).

128800010 is a wasteful number, since it uses less digits than its factorization.

128800010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12880008.

The product of its (nonzero) digits is 128, while the sum is 20.

The square root of 128800010 is about 11349.0092078560. The cubic root of 128800010 is about 505.0161874365.

Adding to 128800010 its reverse (10008821), we get a palindrome (138808831).

The spelling of 128800010 in words is "one hundred twenty-eight million, eight hundred thousand, ten".

Divisors: 1 2 5 10 12880001 25760002 64400005 128800010