261444200 has 24 divisors (see below), whose sum is σ = 607858230. Its totient is φ = 104577600.

The previous prime is 261444187. The next prime is 261444247. The reversal of 261444200 is 2444162.

261444200 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 3 ways, for example, as 225420196 + 36024004 = 15014^2 + 6002^2 .

It is a hoax number, since the sum of its digits (23) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 653411 + ... + 653810.

Almost surely, 2^261444200 is an apocalyptic number.

261444200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

261444200 is an abundant number, since it is smaller than the sum of its proper divisors (346414030).

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

261444200 is a wasteful number, since it uses less digits than its factorization.

261444200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1307237 (or 1307228 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 261444200 is about 16169.2362219123. The cubic root of 261444200 is about 639.4299937855.

Adding to 261444200 its reverse (2444162), we get a palindrome (263888362).

The spelling of 261444200 in words is "two hundred sixty-one million, four hundred forty-four thousand, two hundred".