128258207 has 16 divisors (see below), whose sum is σ = 163629312. Its totient is φ = 97614720.

The previous prime is 128258203. The next prime is 128258231. The reversal of 128258207 is 702852821.

It is not a de Polignac number, because 128258207 - 2² = 128258203 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128258201) 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, 16058 + ... + 22679.

It is an arithmetic number, because the mean of its divisors is an integer number (10226832).

Almost surely, 2^128258207 is an apocalyptic number.

128258207 is a deficient number, since it is larger than the sum of its proper divisors (35371105).

128258207 is a wasteful number, since it uses less digits than its factorization.

128258207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38798.

The product of its (nonzero) digits is 17920, while the sum is 35.

The square root of 128258207 is about 11325.1139950113. The cubic root of 128258207 is about 504.3070678010.

The spelling of 128258207 in words is "one hundred twenty-eight million, two hundred fifty-eight thousand, two hundred seven".