128882837 has 4 divisors (see below), whose sum is σ = 129348396. Its totient is φ = 128417280.

The previous prime is 128882807. The next prime is 128882839. The reversal of 128882837 is 738288821.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 23902321 + 104980516 = 4889^2 + 10246^2 .

It is a cyclic number.

It is not a de Polignac number, because 128882837 - 2⁶ = 128882773 is a prime.

It is a super-2 number, since 2×128882837² = 33221571346337138, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 128882791 and 128882800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128882839) 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, 232364 + ... + 232917.

It is an arithmetic number, because the mean of its divisors is an integer number (32337099).

Almost surely, 2^128882837 is an apocalyptic number.

It is an amenable number.

128882837 is a deficient number, since it is larger than the sum of its proper divisors (465559).

128882837 is an equidigital number, since it uses as much as digits as its factorization.

128882837 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 465558.

The product of its digits is 344064, while the sum is 47.

The square root of 128882837 is about 11352.6577064580. The cubic root of 128882837 is about 505.1244172746.

The spelling of 128882837 in words is "one hundred twenty-eight million, eight hundred eighty-two thousand, eight hundred thirty-seven".