128238074 has 16 divisors (see below), whose sum is σ = 195243048. Its totient is φ = 63163392.

The previous prime is 128238073. The next prime is 128238107. The reversal of 128238074 is 470832821.

It can be written as a sum of positive squares in 4 ways, for example, as 52461049 + 75777025 = 7243^2 + 8705^2 .

It is not an unprimeable number, because it can be changed into a prime (128238073) 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, 43784 + ... + 46620.

Almost surely, 2^128238074 is an apocalyptic number.

128238074 is a deficient number, since it is larger than the sum of its proper divisors (67004974).

128238074 is a wasteful number, since it uses less digits than its factorization.

128238074 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3169.

The product of its (nonzero) digits is 21504, while the sum is 35.

The square root of 128238074 is about 11324.2250949016. The cubic root of 128238074 is about 504.2806789880.

The spelling of 128238074 in words is "one hundred twenty-eight million, two hundred thirty-eight thousand, seventy-four".