261473484 has 24 divisors (see below), whose sum is σ = 611331840. Its totient is φ = 86982544.

The previous prime is 261473479. The next prime is 261473501. The reversal of 261473484 is 484374162.

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, 15624 + ... + 27695.

It is an arithmetic number, because the mean of its divisors is an integer number (25472160).

Almost surely, 2^261473484 is an apocalyptic number.

It is an amenable number.

261473484 is an abundant number, since it is smaller than the sum of its proper divisors (349858356).

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

261473484 is a wasteful number, since it uses less digits than its factorization.

261473484 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43829 (or 43827 counting only the distinct ones).

The product of its digits is 129024, while the sum is 39.

The square root of 261473484 is about 16170.1417433491. The cubic root of 261473484 is about 639.4538667813.

The spelling of 261473484 in words is "two hundred sixty-one million, four hundred seventy-three thousand, four hundred eighty-four".