128938359 has 16 divisors (see below), whose sum is σ = 187810560. Its totient is φ = 78034560.

The previous prime is 128938357. The next prime is 128938361. The reversal of 128938359 is 953839821.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (128938357) and next prime (128938361).

It is not a de Polignac number, because 128938359 - 2¹ = 128938357 is a prime.

It is a super-2 number, since 2×128938359² = 33250200843225762, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128938357) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25359 + ... + 30015.

It is an arithmetic number, because the mean of its divisors is an integer number (11738160).

Almost surely, 2^128938359 is an apocalyptic number.

128938359 is a deficient number, since it is larger than the sum of its proper divisors (58872201).

128938359 is a wasteful number, since it uses less digits than its factorization.

128938359 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5510.

The product of its digits is 466560, while the sum is 48.

The square root of 128938359 is about 11355.1027736432. The cubic root of 128938359 is about 505.1969417789.

The spelling of 128938359 in words is "one hundred twenty-eight million, nine hundred thirty-eight thousand, three hundred fifty-nine".