128492086 has 16 divisors (see below), whose sum is σ = 210660480. Its totient is φ = 58515840.

The previous prime is 128492071. The next prime is 128492113. The reversal of 128492086 is 680294821.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59901 + ... + 62008.

It is an arithmetic number, because the mean of its divisors is an integer number (13166280).

Almost surely, 2^128492086 is an apocalyptic number.

128492086 is a deficient number, since it is larger than the sum of its proper divisors (82168394).

128492086 is a wasteful number, since it uses less digits than its factorization.

128492086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121959.

The product of its (nonzero) digits is 55296, while the sum is 40.

The square root of 128492086 is about 11335.4349718041. The cubic root of 128492086 is about 504.6134165224.

The spelling of 128492086 in words is "one hundred twenty-eight million, four hundred ninety-two thousand, eighty-six".