261030912 has 88 divisors (see below), whose sum is σ = 718447872. Its totient is φ = 84172800.

The previous prime is 261030901. The next prime is 261030923. The reversal of 261030912 is 219030162.

It is an interprime number because it is at equal distance from previous prime (261030901) and next prime (261030923).

It is a Harshad number since it is a multiple of its sum of digits (24).

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, 93862 + ... + 96602.

Almost surely, 2^261030912 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 261030912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (359223936).

261030912 is an abundant number, since it is smaller than the sum of its proper divisors (457416960).

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

261030912 is a wasteful number, since it uses less digits than its factorization.

261030912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2795 (or 2777 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 24.

The square root of 261030912 is about 16156.4510954603. The cubic root of 261030912 is about 639.0928815493.

The spelling of 261030912 in words is "two hundred sixty-one million, thirty thousand, nine hundred twelve".