128926149 has 16 divisors (see below), whose sum is σ = 187742784. Its totient is φ = 78048000.

The previous prime is 128926129. The next prime is 128926163. The reversal of 128926149 is 941629821.

It is a de Polignac number, because none of the positive numbers 2^k-128926149 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 128926149.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128926129) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38007 + ... + 41259.

It is an arithmetic number, because the mean of its divisors is an integer number (11733924).

Almost surely, 2^128926149 is an apocalyptic number.

It is an amenable number.

128926149 is a deficient number, since it is larger than the sum of its proper divisors (58816635).

128926149 is a wasteful number, since it uses less digits than its factorization.

128926149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4468.

The product of its digits is 62208, while the sum is 42.

The square root of 128926149 is about 11354.5651171676. The cubic root of 128926149 is about 505.1809944962.

The spelling of 128926149 in words is "one hundred twenty-eight million, nine hundred twenty-six thousand, one hundred forty-nine".