128325446 has 4 divisors (see below), whose sum is σ = 192488172. Its totient is φ = 64162722.

The previous prime is 128325433. The next prime is 128325479. The reversal of 128325446 is 644523821.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 644523821 = 31 ⋅20791091.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32081360 + ... + 32081363.

It is an arithmetic number, because the mean of its divisors is an integer number (48122043).

Almost surely, 2^128325446 is an apocalyptic number.

128325446 is a deficient number, since it is larger than the sum of its proper divisors (64162726).

128325446 is an equidigital number, since it uses as much as digits as its factorization.

128325446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64162725.

The product of its digits is 46080, while the sum is 35.

The square root of 128325446 is about 11328.0821854363. The cubic root of 128325446 is about 504.3951795870.

The spelling of 128325446 in words is "one hundred twenty-eight million, three hundred twenty-five thousand, four hundred forty-six".