259198730 has 96 divisors (see below), whose sum is σ = 574231680. Its totient is φ = 83825280.

The previous prime is 259198729. The next prime is 259198747. The reversal of 259198730 is 37891952.

It is a super-2 number, since 2×259198730² = 134367963267225800, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1228325 + ... + 1228535.

It is an arithmetic number, because the mean of its divisors is an integer number (5981580).

Almost surely, 2^259198730 is an apocalyptic number.

259198730 is an abundant number, since it is smaller than the sum of its proper divisors (315032950).

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

259198730 is a wasteful number, since it uses less digits than its factorization.

259198730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 364 (or 357 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 44.

The square root of 259198730 is about 16099.6499961956. The cubic root of 259198730 is about 637.5941001681.

The spelling of 259198730 in words is "two hundred fifty-nine million, one hundred ninety-eight thousand, seven hundred thirty".