128546390 has 32 divisors (see below), whose sum is σ = 264833280. Its totient is φ = 44007264.

The previous prime is 128546377. The next prime is 128546443. The reversal of 128546390 is 93645821.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 80621 + ... + 82199.

It is an arithmetic number, because the mean of its divisors is an integer number (8276040).

Almost surely, 2^128546390 is an apocalyptic number.

128546390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

128546390 is an abundant number, since it is smaller than the sum of its proper divisors (136286890).

128546390 is a wasteful number, since it uses less digits than its factorization.

128546390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2756.

The product of its (nonzero) digits is 51840, while the sum is 38.

The square root of 128546390 is about 11337.8300392976. The cubic root of 128546390 is about 504.6844939675.

The spelling of 128546390 in words is "one hundred twenty-eight million, five hundred forty-six thousand, three hundred ninety".