128466437 has 4 divisors (see below), whose sum is σ = 140145216. Its totient is φ = 116787660.

The previous prime is 128466367. The next prime is 128466439. The reversal of 128466437 is 734664821.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 128466437 - 2¹⁶ = 128400901 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 128466394 and 128466403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128466439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5839373 + ... + 5839394.

It is an arithmetic number, because the mean of its divisors is an integer number (35036304).

Almost surely, 2^128466437 is an apocalyptic number.

It is an amenable number.

128466437 is a deficient number, since it is larger than the sum of its proper divisors (11678779).

128466437 is a wasteful number, since it uses less digits than its factorization.

128466437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11678778.

The product of its digits is 193536, while the sum is 41.

The square root of 128466437 is about 11334.3035516083. The cubic root of 128466437 is about 504.5798380840.

The spelling of 128466437 in words is "one hundred twenty-eight million, four hundred sixty-six thousand, four hundred thirty-seven".