261652104 has 48 divisors (see below), whose sum is σ = 809877120. Its totient is φ = 74757600.

The previous prime is 261652103. The next prime is 261652133. The reversal of 261652104 is 401256162.

261652104 is a `hidden beast` number, since 2 + 6 + 1 + 652 + 1 + 0 + 4 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (261652103) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 259072 + ... + 260079.

It is an arithmetic number, because the mean of its divisors is an integer number (16872440).

Almost surely, 2^261652104 is an apocalyptic number.

261652104 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

261652104 is an abundant number, since it is smaller than the sum of its proper divisors (548225016).

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

261652104 is a wasteful number, since it uses less digits than its factorization.

261652104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 519170 (or 519163 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 261652104 is about 16175.6639430967. The cubic root of 261652104 is about 639.5994433664.

The spelling of 261652104 in words is "two hundred sixty-one million, six hundred fifty-two thousand, one hundred four".