128132590 has 16 divisors (see below), whose sum is σ = 231395472. Its totient is φ = 51084864.

The previous prime is 128132581. The next prime is 128132603. The reversal of 128132590 is 95231821.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17799 + ... + 23938.

It is an arithmetic number, because the mean of its divisors is an integer number (14462217).

Almost surely, 2^128132590 is an apocalyptic number.

128132590 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

128132590 is a deficient number, since it is larger than the sum of its proper divisors (103262882).

128132590 is a wasteful number, since it uses less digits than its factorization.

128132590 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42051.

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 128132590 is about 11319.5666878198. The cubic root of 128132590 is about 504.1423733788.

The spelling of 128132590 in words is "one hundred twenty-eight million, one hundred thirty-two thousand, five hundred ninety".