128887337 has 2 divisors, whose sum is σ = 128887338. Its totient is φ = 128887336.

The previous prime is 128887321. The next prime is 128887351. The reversal of 128887337 is 733788821.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 111112681 + 17774656 = 10541^2 + 4216^2 .

It is an emirp because it is prime and its reverse (733788821) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 128887337 - 2⁴ = 128887321 is a prime.

It is a super-2 number, since 2×128887337² = 33223891277903138, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 128887291 and 128887300.

It is not a weakly prime, because it can be changed into another prime (128887357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64443668 + 64443669.

It is an arithmetic number, because the mean of its divisors is an integer number (64443669).

Almost surely, 2^128887337 is an apocalyptic number.

It is an amenable number.

128887337 is a deficient number, since it is larger than the sum of its proper divisors (1).

128887337 is an equidigital number, since it uses as much as digits as its factorization.

128887337 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 451584, while the sum is 47.

The square root of 128887337 is about 11352.8558962051. The cubic root of 128887337 is about 505.1302960854.

The spelling of 128887337 in words is "one hundred twenty-eight million, eight hundred eighty-seven thousand, three hundred thirty-seven".