128154285 has 32 divisors (see below), whose sum is σ = 260378880. Its totient is φ = 58584384.

The previous prime is 128154251. The next prime is 128154307. The reversal of 128154285 is 582451821.

It is not a de Polignac number, because 128154285 - 2⁷ = 128154157 is a prime.

It is a super-2 number, since 2×128154285² = 32847041527722450, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 66862 + ... + 68751.

It is an arithmetic number, because the mean of its divisors is an integer number (8136840).

Almost surely, 2^128154285 is an apocalyptic number.

128154285 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

128154285 is an abundant number, since it is smaller than the sum of its proper divisors (132224595).

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

128154285 is a wasteful number, since it uses less digits than its factorization.

128154285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135634 (or 135628 counting only the distinct ones).

The product of its digits is 25600, while the sum is 36.

The square root of 128154285 is about 11320.5249436588. The cubic root of 128154285 is about 504.1708250308.

The spelling of 128154285 in words is "one hundred twenty-eight million, one hundred fifty-four thousand, two hundred eighty-five".