261824466 has 8 divisors (see below), whose sum is σ = 523648944. Its totient is φ = 87274820.

The previous prime is 261824449. The next prime is 261824513. The reversal of 261824466 is 664428162.

It is a sphenic number, since it is the product of 3 distinct primes.

261824466 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21818700 + ... + 21818711.

It is an arithmetic number, because the mean of its divisors is an integer number (65456118).

Almost surely, 2^261824466 is an apocalyptic number.

261824466 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

261824466 is a wasteful number, since it uses less digits than its factorization.

261824466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43637416.

The product of its digits is 110592, while the sum is 39.

The square root of 261824466 is about 16180.9908843680. The cubic root of 261824466 is about 639.7398568381.

The spelling of 261824466 in words is "two hundred sixty-one million, eight hundred twenty-four thousand, four hundred sixty-six".