128606049 has 48 divisors (see below), whose sum is σ = 226384704. Its totient is φ = 71928000.

The previous prime is 128606047. The next prime is 128606057. The reversal of 128606049 is 940606821.

128606049 is a `hidden beast` number, since 1 + 2 + 8 + 606 + 0 + 49 = 666.

It is not a de Polignac number, because 128606049 - 2¹ = 128606047 is a prime.

It is not an unprimeable number, because it can be changed into a prime (128606047) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 32899 + ... + 36599.

It is an arithmetic number, because the mean of its divisors is an integer number (4716348).

Almost surely, 2^128606049 is an apocalyptic number.

It is an amenable number.

128606049 is a deficient number, since it is larger than the sum of its proper divisors (97778655).

128606049 is a wasteful number, since it uses less digits than its factorization.

128606049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3740 (or 3728 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 128606049 is about 11340.4607049273. The cubic root of 128606049 is about 504.7625573953.

The spelling of 128606049 in words is "one hundred twenty-eight million, six hundred six thousand, forty-nine".