245390 has 16 divisors (see below), whose sum is σ = 451008. Its totient is φ = 96096.

The previous prime is 245389. The next prime is 245407. The reversal of 245390 is 93542.

245390 = 285² + 286² + 287².

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 299 + ... + 761.

It is an arithmetic number, because the mean of its divisors is an integer number (28188).

2²⁴⁵³⁹⁰ is an apocalyptic number.

245390 is a deficient number, since it is larger than the sum of its proper divisors (205618).

245390 is a wasteful number, since it uses less digits than its factorization.

245390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 523.

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 245390 is about 495.3685496678. The cubic root of 245390 is about 62.6064319862.

The spelling of 245390 in words is "two hundred forty-five thousand, three hundred ninety".