259991460 has 72 divisors (see below), whose sum is σ = 790256376. Its totient is φ = 69189120.

The previous prime is 259991443. The next prime is 259991491. The reversal of 259991460 is 64199952.

It can be written as a sum of positive squares in 4 ways, for example, as 2196324 + 257795136 = 1482^2 + 16056^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 109890 + ... + 112230.

It is an arithmetic number, because the mean of its divisors is an integer number (10975783).

Almost surely, 2^259991460 is an apocalyptic number.

259991460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

259991460 is an abundant number, since it is smaller than the sum of its proper divisors (530264916).

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

259991460 is a wasteful number, since it uses less digits than its factorization.

259991460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2973 (or 2968 counting only the distinct ones).

The product of its (nonzero) digits is 174960, while the sum is 45.

The square root of 259991460 is about 16124.2506802642. The cubic root of 259991460 is about 638.2434417855.

The spelling of 259991460 in words is "two hundred fifty-nine million, nine hundred ninety-one thousand, four hundred sixty".