261941300 has 18 divisors (see below), whose sum is σ = 568412838. Its totient is φ = 104776480.

The previous prime is 261941299. The next prime is 261941357. The reversal of 261941300 is 3149162.

It can be written as a sum of positive squares in 3 ways, for example, as 5044516 + 256896784 = 2246^2 + 16028^2 .

It is a super-2 number, since 2×261941300² = 137226489291380000, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 261941300.

It is a congruent number.

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, 1309607 + ... + 1309806.

It is an arithmetic number, because the mean of its divisors is an integer number (31578491).

Almost surely, 2^261941300 is an apocalyptic number.

261941300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

261941300 is an abundant number, since it is smaller than the sum of its proper divisors (306471538).

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

261941300 is a wasteful number, since it uses less digits than its factorization.

261941300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2619427 (or 2619420 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 261941300 is about 16184.6007056090. The cubic root of 261941300 is about 639.8349997822.

The spelling of 261941300 in words is "two hundred sixty-one million, nine hundred forty-one thousand, three hundred".