261962672 has 10 divisors (see below), whose sum is σ = 507552708. Its totient is φ = 130981328.

The previous prime is 261962651. The next prime is 261962693. The reversal of 261962672 is 276269162.

It is an interprime number because it is at equal distance from previous prime (261962651) and next prime (261962693).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8186318 + ... + 8186349.

Almost surely, 2^261962672 is an apocalyptic number.

It is an amenable number.

261962672 is a deficient number, since it is larger than the sum of its proper divisors (245590036).

261962672 is a wasteful number, since it uses less digits than its factorization.

261962672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16372675 (or 16372669 counting only the distinct ones).

The product of its digits is 108864, while the sum is 41.

The square root of 261962672 is about 16185.2609493947. The cubic root of 261962672 is about 639.8524008586.

The spelling of 261962672 in words is "two hundred sixty-one million, nine hundred sixty-two thousand, six hundred seventy-two".