128254470 has 16 divisors (see below), whose sum is σ = 307810800. Its totient is φ = 34201184.

The previous prime is 128254459. The next prime is 128254487. The reversal of 128254470 is 74452821.

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, 2137545 + ... + 2137604.

It is an arithmetic number, because the mean of its divisors is an integer number (19238175).

Almost surely, 2^128254470 is an apocalyptic number.

128254470 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

128254470 is an abundant number, since it is smaller than the sum of its proper divisors (179556330).

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

128254470 is a wasteful number, since it uses less digits than its factorization.

128254470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4275159.

The product of its (nonzero) digits is 17920, while the sum is 33.

The square root of 128254470 is about 11324.9490065077. The cubic root of 128254470 is about 504.3021698329.

The spelling of 128254470 in words is "one hundred twenty-eight million, two hundred fifty-four thousand, four hundred seventy".