261236248 has 48 divisors (see below), whose sum is σ = 613630080. Its totient is φ = 103344192.

The previous prime is 261236233. The next prime is 261236273. The reversal of 261236248 is 842632162.

261236248 is digitally balanced in base 3, because in such base 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 11 ways as a sum of consecutive naturals, for example, 20536 + ... + 30727.

It is an arithmetic number, because the mean of its divisors is an integer number (12783960).

Almost surely, 2^261236248 is an apocalyptic number.

261236248 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

261236248 is an abundant number, since it is smaller than the sum of its proper divisors (352393832).

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

261236248 is a wasteful number, since it uses less digits than its factorization.

261236248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51296 (or 51285 counting only the distinct ones).

The product of its digits is 27648, while the sum is 34.

The square root of 261236248 is about 16162.8044596227. The cubic root of 261236248 is about 639.2604151953.

The spelling of 261236248 in words is "two hundred sixty-one million, two hundred thirty-six thousand, two hundred forty-eight".