261338200 has 24 divisors (see below), whose sum is σ = 607611780. Its totient is φ = 104535200.

The previous prime is 261338197. The next prime is 261338201. The reversal of 261338200 is 2833162.

261338200 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (261338201) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 653146 + ... + 653545.

Almost surely, 2^261338200 is an apocalyptic number.

261338200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

261338200 is an abundant number, since it is smaller than the sum of its proper divisors (346273580).

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

261338200 is a wasteful number, since it uses less digits than its factorization.

261338200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1306707 (or 1306698 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 261338200 is about 16165.9580600718. The cubic root of 261338200 is about 639.3435652198.

The spelling of 261338200 in words is "two hundred sixty-one million, three hundred thirty-eight thousand, two hundred".