Search a number
-
+
128089037 = 764316759
BaseRepresentation
bin1111010001001…
…11101111001101
322221000121010102
413220213233031
5230242322122
620413220445
73113511266
oct750475715
9287017112
10128089037
116633720a
1236a91725
13206c9a3b
141302396d
15b3a2492
hex7a27bcd

128089037 has 4 divisors (see below), whose sum is σ = 128113440. Its totient is φ = 128064636.

The previous prime is 128089021. The next prime is 128089097. The reversal of 128089037 is 730980821.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 128089037 - 24 = 128089021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128089097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 737 + ... + 16022.

It is an arithmetic number, because the mean of its divisors is an integer number (32028360).

Almost surely, 2128089037 is an apocalyptic number.

It is an amenable number.

128089037 is a deficient number, since it is larger than the sum of its proper divisors (24403).

128089037 is an equidigital number, since it uses as much as digits as its factorization.

128089037 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24402.

The product of its (nonzero) digits is 24192, while the sum is 38.

The square root of 128089037 is about 11317.6427315939. The cubic root of 128089037 is about 504.0852466140.

The spelling of 128089037 in words is "one hundred twenty-eight million, eighty-nine thousand, thirty-seven".

Divisors: 1 7643 16759 128089037