245128 has 16 divisors (see below), whose sum is σ = 495180. Its totient is φ = 113088.

The previous prime is 245107. The next prime is 245129. The reversal of 245128 is 821542.

It can be written as a sum of positive squares in 2 ways, for example, as 213444 + 31684 = 462^2 + 178^2 .

It is a nialpdrome in base 13.

It is a junction number, because it is equal to n+sod(n) for n = 245099 and 245108.

It is not an unprimeable number, because it can be changed into a prime (245129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1075 + ... + 1282.

2²⁴⁵¹²⁸ is an apocalyptic number.

It is an amenable number.

245128 is an abundant number, since it is smaller than the sum of its proper divisors (250052).

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

245128 is a wasteful number, since it uses less digits than its factorization.

245128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2376 (or 2372 counting only the distinct ones).

The product of its digits is 640, while the sum is 22.

The square root of 245128 is about 495.1040294726. The cubic root of 245128 is about 62.5841426693.

It can be divided in two parts, 245 and 128, that added together give a palindrome (373).

The spelling of 245128 in words is "two hundred forty-five thousand, one hundred twenty-eight".