261416316 has 24 divisors (see below), whose sum is σ = 697110400. Its totient is φ = 74690352.

The previous prime is 261416297. The next prime is 261416317. The reversal of 261416316 is 613614162.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (261416317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1555966 + ... + 1556133.

Almost surely, 2^261416316 is an apocalyptic number.

It is an amenable number.

261416316 is an abundant number, since it is smaller than the sum of its proper divisors (435694084).

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

261416316 is a wasteful number, since it uses less digits than its factorization.

261416316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3112113 (or 3112111 counting only the distinct ones).

The product of its digits is 5184, while the sum is 30.

The square root of 261416316 is about 16168.3739442159. The cubic root of 261416316 is about 639.4072604452.

The spelling of 261416316 in words is "two hundred sixty-one million, four hundred sixteen thousand, three hundred sixteen".