128084537 has 4 divisors (see below), whose sum is σ = 146382336. Its totient is φ = 109786740.

The previous prime is 128084531. The next prime is 128084543. The reversal of 128084537 is 735480821.

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 an interprime number because it is at equal distance from previous prime (128084531) and next prime (128084543).

It is not a de Polignac number, because 128084537 - 2¹² = 128080441 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 128084537.

It is not an unprimeable number, because it can be changed into a prime (128084531) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9148889 + ... + 9148902.

It is an arithmetic number, because the mean of its divisors is an integer number (36595584).

Almost surely, 2^128084537 is an apocalyptic number.

It is an amenable number.

128084537 is a deficient number, since it is larger than the sum of its proper divisors (18297799).

128084537 is an equidigital number, since it uses as much as digits as its factorization.

128084537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18297798.

The product of its (nonzero) digits is 53760, while the sum is 38.

The square root of 128084537 is about 11317.4439251980. The cubic root of 128084537 is about 504.0793434021.

The spelling of 128084537 in words is "one hundred twenty-eight million, eighty-four thousand, five hundred thirty-seven".