261232004 has 24 divisors (see below), whose sum is σ = 505745856. Its totient is φ = 117068000.

The previous prime is 261232003. The next prime is 261232043. The reversal of 261232004 is 400232162.

It is not an unprimeable number, because it can be changed into a prime (261232001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38687 + ... + 44934.

It is an arithmetic number, because the mean of its divisors is an integer number (21072744).

Almost surely, 2^261232004 is an apocalyptic number.

It is an amenable number.

261232004 is a deficient number, since it is larger than the sum of its proper divisors (244513852).

261232004 is a wasteful number, since it uses less digits than its factorization.

261232004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83707 (or 83705 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 261232004 is about 16162.6731699926. The cubic root of 261232004 is about 639.2569534043.

Adding to 261232004 its reverse (400232162), we get a palindrome (661464166).

The spelling of 261232004 in words is "two hundred sixty-one million, two hundred thirty-two thousand, four".