128445415 has 48 divisors (see below), whose sum is σ = 193626720. Its totient is φ = 81285120.

The previous prime is 128445403. The next prime is 128445433. The reversal of 128445415 is 514544821.

It is not a de Polignac number, because 128445415 - 2¹³ = 128437223 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 190519 + ... + 191191.

It is an arithmetic number, because the mean of its divisors is an integer number (4033890).

Almost surely, 2^128445415 is an apocalyptic number.

128445415 is a deficient number, since it is larger than the sum of its proper divisors (65181305).

128445415 is a wasteful number, since it uses less digits than its factorization.

128445415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 752 (or 745 counting only the distinct ones).

The product of its digits is 25600, while the sum is 34.

The square root of 128445415 is about 11333.3761518799. The cubic root of 128445415 is about 504.5523137587.

The spelling of 128445415 in words is "one hundred twenty-eight million, four hundred forty-five thousand, four hundred fifteen".