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128038214 = 264019107
BaseRepresentation
bin1111010000110…
…11010101000110
322220221000102002
413220123111012
5230234210324
620412145302
73113210153
oct750332506
9286830362
10128038214
1166302007
1236a68232
13206ac875
141300d22a
15b3923ae
hex7a1b546

128038214 has 4 divisors (see below), whose sum is σ = 192057324. Its totient is φ = 64019106.

The previous prime is 128038213. The next prime is 128038243. The reversal of 128038214 is 412830821.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 412830821 = 1331756217.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128038213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32009552 + ... + 32009555.

It is an arithmetic number, because the mean of its divisors is an integer number (48014331).

Almost surely, 2128038214 is an apocalyptic number.

128038214 is a deficient number, since it is larger than the sum of its proper divisors (64019110).

128038214 is an equidigital number, since it uses as much as digits as its factorization.

128038214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64019109.

The product of its (nonzero) digits is 3072, while the sum is 29.

The square root of 128038214 is about 11315.3972091129. The cubic root of 128038214 is about 504.0185677001.

The spelling of 128038214 in words is "one hundred twenty-eight million, thirty-eight thousand, two hundred fourteen".

Divisors: 1 2 64019107 128038214