261460788 has 12 divisors (see below), whose sum is σ = 610075200. Its totient is φ = 87153592.

The previous prime is 261460783. The next prime is 261460811. The reversal of 261460788 is 887064162.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (261460783) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10894188 + ... + 10894211.

It is an arithmetic number, because the mean of its divisors is an integer number (50839600).

Almost surely, 2^261460788 is an apocalyptic number.

It is an amenable number.

261460788 is an abundant number, since it is smaller than the sum of its proper divisors (348614412).

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

261460788 is a wasteful number, since it uses less digits than its factorization.

261460788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21788406 (or 21788404 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 42.

The square root of 261460788 is about 16169.7491631750. The cubic root of 261460788 is about 639.4435169266.

The spelling of 261460788 in words is "two hundred sixty-one million, four hundred sixty thousand, seven hundred eighty-eight".