261016336 has 45 divisors (see below), whose sum is σ = 589306869. Its totient is φ = 111670272.

The previous prime is 261016313. The next prime is 261016337. The reversal of 261016336 is 633610162.

The square root of 261016336 is 16156.

It is a perfect power (a square), and thus also a powerful number.

261016336 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 259210000 + 1806336 = 16100^2 + 1344^2 .

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (261016337) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 452080 + ... + 452656.

Almost surely, 2^261016336 is an apocalyptic number.

261016336 is the 16156-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 261016336

261016336 is an abundant number, since it is smaller than the sum of its proper divisors (328290533).

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

261016336 is an frugal number, since it uses more digits than its factorization.

261016336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1176 (or 586 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 28.

The cubic root of 261016336 is about 639.0809856514.

Adding to 261016336 its reverse (633610162), we get a palindrome (894626498).

The spelling of 261016336 in words is "two hundred sixty-one million, sixteen thousand, three hundred thirty-six".