128774 has 12 divisors (see below), whose sum is σ = 202572. Its totient is φ = 61380.

The previous prime is 128767. The next prime is 128813. The reversal of 128774 is 477821.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1889 + ... + 1955.

It is an arithmetic number, because the mean of its divisors is an integer number (16881).

2¹²⁸⁷⁷⁴ is an apocalyptic number.

128774 is a deficient number, since it is larger than the sum of its proper divisors (73798).

128774 is an equidigital number, since it uses as much as digits as its factorization.

With its successor (128775) it forms a Ruth-Aaron pair, since the sum of their prime factors is the same (131).

128774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131 (or 100 counting only the distinct ones).

The product of its digits is 3136, while the sum is 29.

The square root of 128774 is about 358.8509439865. The cubic root of 128774 is about 50.4982190660.

The spelling of 128774 in words is "one hundred twenty-eight thousand, seven hundred seventy-four".