128650926 has 16 divisors (see below), whose sum is σ = 263286144. Its totient is φ = 41886264.

The previous prime is 128650909. The next prime is 128650927. The reversal of 128650926 is 629056821.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128650927) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 249066 + ... + 249581.

It is an arithmetic number, because the mean of its divisors is an integer number (16455384).

Almost surely, 2^128650926 is an apocalyptic number.

128650926 is an abundant number, since it is smaller than the sum of its proper divisors (134635218).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

128650926 is a wasteful number, since it uses less digits than its factorization.

128650926 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 498695.

The product of its (nonzero) digits is 51840, while the sum is 39.

The square root of 128650926 is about 11342.4391556667. The cubic root of 128650926 is about 504.8212627599.

The spelling of 128650926 in words is "one hundred twenty-eight million, six hundred fifty thousand, nine hundred twenty-six".