128055494 has 16 divisors (see below), whose sum is σ = 220237056. Its totient is φ = 54702600.

The previous prime is 128055491. The next prime is 128055523. The reversal of 128055494 is 494550821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128055491) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10352 + ... + 19059.

It is an arithmetic number, because the mean of its divisors is an integer number (13764816).

Almost surely, 2^128055494 is an apocalyptic number.

128055494 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

128055494 is a deficient number, since it is larger than the sum of its proper divisors (92181562).

128055494 is a wasteful number, since it uses less digits than its factorization.

128055494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29731.

The product of its (nonzero) digits is 57600, while the sum is 38.

The square root of 128055494 is about 11316.1607447049. The cubic root of 128055494 is about 504.0412407464.

The spelling of 128055494 in words is "one hundred twenty-eight million, fifty-five thousand, four hundred ninety-four".