128250837 has 64 divisors (see below), whose sum is σ = 227404800. Its totient is φ = 70407360.

The previous prime is 128250821. The next prime is 128250877. The reversal of 128250837 is 738052821.

It is not a de Polignac number, because 128250837 - 2⁴ = 128250821 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128250877) 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 63 ways as a sum of consecutive naturals, for example, 227518 + ... + 228080.

It is an arithmetic number, because the mean of its divisors is an integer number (3553200).

Almost surely, 2^128250837 is an apocalyptic number.

It is an amenable number.

128250837 is a deficient number, since it is larger than the sum of its proper divisors (99153963).

128250837 is a wasteful number, since it uses less digits than its factorization.

128250837 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 655 (or 649 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 36.

The square root of 128250837 is about 11324.7886072986. The cubic root of 128250837 is about 504.2974080831.

The spelling of 128250837 in words is "one hundred twenty-eight million, two hundred fifty thousand, eight hundred thirty-seven".