261000930 has 16 divisors (see below), whose sum is σ = 626402304. Its totient is φ = 69600240.

The previous prime is 261000919. The next prime is 261000947. The reversal of 261000930 is 39000162.

It is a super-3 number, since 3×261000930³ (a number of 26 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 261000897 and 261000906.

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, 4349986 + ... + 4350045.

It is an arithmetic number, because the mean of its divisors is an integer number (39150144).

Almost surely, 2^261000930 is an apocalyptic number.

261000930 is an abundant number, since it is smaller than the sum of its proper divisors (365401374).

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

261000930 is a wasteful number, since it uses less digits than its factorization.

261000930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8700041.

The product of its (nonzero) digits is 324, while the sum is 21.

The square root of 261000930 is about 16155.5232041553. The cubic root of 261000930 is about 639.0684118849.

The spelling of 261000930 in words is "two hundred sixty-one million, nine hundred thirty", and thus it is an aban number.