128371590 has 48 divisors (see below), whose sum is σ = 353403648. Its totient is φ = 32218368.

The previous prime is 128371577. The next prime is 128371591. The reversal of 128371590 is 95173821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128371591) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 40422 + ... + 43481.

It is an arithmetic number, because the mean of its divisors is an integer number (7362576).

Almost surely, 2^128371590 is an apocalyptic number.

128371590 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

128371590 is an abundant number, since it is smaller than the sum of its proper divisors (225032058).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

128371590 is a wasteful number, since it uses less digits than its factorization.

128371590 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83933 (or 83930 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 36.

The square root of 128371590 is about 11330.1187107638. The cubic root of 128371590 is about 504.4556301126.

The spelling of 128371590 in words is "one hundred twenty-eight million, three hundred seventy-one thousand, five hundred ninety".