261202436 has 12 divisors (see below), whose sum is σ = 498659280. Its totient is φ = 118728360.

The previous prime is 261202429. The next prime is 261202439. The reversal of 261202436 is 634202162.

It is not an unprimeable number, because it can be changed into a prime (261202439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2968166 + ... + 2968253.

It is an arithmetic number, because the mean of its divisors is an integer number (41554940).

Almost surely, 2^261202436 is an apocalyptic number.

It is an amenable number.

261202436 is a deficient number, since it is larger than the sum of its proper divisors (237456844).

261202436 is a wasteful number, since it uses less digits than its factorization.

261202436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5936434 (or 5936432 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 261202436 is about 16161.7584439318. The cubic root of 261202436 is about 639.2328340232.

Adding to 261202436 its reverse (634202162), we get a palindrome (895404598).

The spelling of 261202436 in words is "two hundred sixty-one million, two hundred two thousand, four hundred thirty-six".