261258948 has 36 divisors (see below), whose sum is σ = 681710848. Its totient is φ = 84276720.

The previous prime is 261258937. The next prime is 261258953. The reversal of 261258948 is 849852162.

261258948 is a `hidden beast` number, since 2 + 61 + 2 + 589 + 4 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is an upside-down number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 115936 + ... + 118167.

Almost surely, 2^261258948 is an apocalyptic number.

It is an amenable number.

261258948 is an abundant number, since it is smaller than the sum of its proper divisors (420451900).

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

261258948 is a wasteful number, since it uses less digits than its factorization.

261258948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234144 (or 234139 counting only the distinct ones).

The product of its digits is 276480, while the sum is 45.

The square root of 261258948 is about 16163.5066739863. The cubic root of 261258948 is about 639.2789307360.

The spelling of 261258948 in words is "two hundred sixty-one million, two hundred fifty-eight thousand, nine hundred forty-eight".