128860073 has 4 divisors (see below), whose sum is σ = 130412688. Its totient is φ = 127307460.

The previous prime is 128860063. The next prime is 128860093. The reversal of 128860073 is 370068821.

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 a cyclic number.

It is not a de Polignac number, because 128860073 - 2⁶ = 128860009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (128860063) 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, 776183 + ... + 776348.

It is an arithmetic number, because the mean of its divisors is an integer number (32603172).

Almost surely, 2^128860073 is an apocalyptic number.

It is an amenable number.

128860073 is a deficient number, since it is larger than the sum of its proper divisors (1552615).

128860073 is an equidigital number, since it uses as much as digits as its factorization.

128860073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1552614.

The product of its (nonzero) digits is 16128, while the sum is 35.

The square root of 128860073 is about 11351.6550775647. The cubic root of 128860073 is about 505.0946762335.

The spelling of 128860073 in words is "one hundred twenty-eight million, eight hundred sixty thousand, seventy-three".