261502672 has 20 divisors (see below), whose sum is σ = 507708576. Its totient is φ = 130481120.

The previous prime is 261502667. The next prime is 261502673. The reversal of 261502672 is 276205162.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (261502673) 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, 8788 + ... + 24499.

Almost surely, 2^261502672 is an apocalyptic number.

It is an amenable number.

261502672 is a deficient number, since it is larger than the sum of its proper divisors (246205904).

261502672 is a wasteful number, since it uses less digits than its factorization.

261502672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33786 (or 33780 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 261502672 is about 16171.0442458117. The cubic root of 261502672 is about 639.4776597420.

The spelling of 261502672 in words is "two hundred sixty-one million, five hundred two thousand, six hundred seventy-two".