128196365 has 16 divisors (see below), whose sum is σ = 175118976. Its totient is φ = 89179200.

The previous prime is 128196331. The next prime is 128196391. The reversal of 128196365 is 563691821.

It is not a de Polignac number, because 128196365 - 2¹² = 128192269 is a prime.

It is a Duffinian 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, 49406 + ... + 51935.

It is an arithmetic number, because the mean of its divisors is an integer number (10944936).

Almost surely, 2^128196365 is an apocalyptic number.

It is an amenable number.

128196365 is a deficient number, since it is larger than the sum of its proper divisors (46922611).

128196365 is a wasteful number, since it uses less digits than its factorization.

128196365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101380.

The product of its digits is 77760, while the sum is 41.

The square root of 128196365 is about 11322.3833621725. The cubic root of 128196365 is about 504.2260011977.

It can be divided in two parts, 1281963 and 65, that multiplied together give a triangular number (83327595 = T₁₂₉₀₉).

The spelling of 128196365 in words is "one hundred twenty-eight million, one hundred ninety-six thousand, three hundred sixty-five".