145005798 has 24 divisors (see below), whose sum is σ = 337361112. Its totient is φ = 41430144.

The previous prime is 145005793. The next prime is 145005799. The reversal of 145005798 is 897500541.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145005793) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 246315 + ... + 246902.

It is an arithmetic number, because the mean of its divisors is an integer number (14056713).

Almost surely, 2^145005798 is an apocalyptic number.

145005798 is an abundant number, since it is smaller than the sum of its proper divisors (192355314).

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

145005798 is a wasteful number, since it uses less digits than its factorization.

145005798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 493236 (or 493229 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 39.

The square root of 145005798 is about 12041.8353252318. The cubic root of 145005798 is about 525.3657895243.

The spelling of 145005798 in words is "one hundred forty-five million, five thousand, seven hundred ninety-eight".