261303448 has 32 divisors (see below), whose sum is σ = 569433600. Its totient is φ = 110087712.

The previous prime is 261303439. The next prime is 261303451. The reversal of 261303448 is 844303162.

261303448 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36240 + ... + 42847.

It is an arithmetic number, because the mean of its divisors is an integer number (17794800).

Almost surely, 2^261303448 is an apocalyptic number.

261303448 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

261303448 is an abundant number, since it is smaller than the sum of its proper divisors (308130152).

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

261303448 is a wasteful number, since it uses less digits than its factorization.

261303448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79159 (or 79155 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 31.

The square root of 261303448 is about 16164.8831731009. The cubic root of 261303448 is about 639.3152246092.

The spelling of 261303448 in words is "two hundred sixty-one million, three hundred three thousand, four hundred forty-eight".