261483448 has 8 divisors (see below), whose sum is σ = 490281480. Its totient is φ = 130741720.

The previous prime is 261483437. The next prime is 261483487. The reversal of 261483448 is 844384162.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 261483448.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16342708 + ... + 16342723.

It is an arithmetic number, because the mean of its divisors is an integer number (61285185).

Almost surely, 2^261483448 is an apocalyptic number.

It is an amenable number.

261483448 is a deficient number, since it is larger than the sum of its proper divisors (228798032).

261483448 is a wasteful number, since it uses less digits than its factorization.

261483448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32685437 (or 32685433 counting only the distinct ones).

The product of its digits is 147456, while the sum is 40.

The square root of 261483448 is about 16170.4498391356. The cubic root of 261483448 is about 639.4619892587.

The spelling of 261483448 in words is "two hundred sixty-one million, four hundred eighty-three thousand, four hundred forty-eight".