259394140 has 24 divisors (see below), whose sum is σ = 545166720. Its totient is φ = 103674048.

The previous prime is 259394131. The next prime is 259394153. The reversal of 259394140 is 41493952.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 259394140.

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, 24274 + ... + 33286.

It is an arithmetic number, because the mean of its divisors is an integer number (22715280).

Almost surely, 2^259394140 is an apocalyptic number.

259394140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

259394140 is an abundant number, since it is smaller than the sum of its proper divisors (285772580).

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

259394140 is a wasteful number, since it uses less digits than its factorization.

259394140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10461 (or 10459 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 37.

The square root of 259394140 is about 16105.7176182870. The cubic root of 259394140 is about 637.7542873806.

The spelling of 259394140 in words is "two hundred fifty-nine million, three hundred ninety-four thousand, one hundred forty".