261470632 has 16 divisors (see below), whose sum is σ = 490436640. Its totient is φ = 130687536.

The previous prime is 261470611. The next prime is 261470633. The reversal of 261470632 is 236074162.

It is a junction number, because it is equal to n+sod(n) for n = 261470594 and 261470603.

It is not an unprimeable number, because it can be changed into a prime (261470633) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30093 + ... + 37795.

It is an arithmetic number, because the mean of its divisors is an integer number (30652290).

Almost surely, 2^261470632 is an apocalyptic number.

It is an amenable number.

261470632 is a deficient number, since it is larger than the sum of its proper divisors (228966008).

261470632 is a wasteful number, since it uses less digits than its factorization.

261470632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11952 (or 11948 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 31.

The square root of 261470632 is about 16170.0535558792. The cubic root of 261470632 is about 639.4515418431.

The spelling of 261470632 in words is "two hundred sixty-one million, four hundred seventy thousand, six hundred thirty-two".