205648972 has 12 divisors (see below), whose sum is σ = 359999640. Its totient is φ = 102791936.

The previous prime is 205648943. The next prime is 205648979. The reversal of 205648972 is 279846502.

It is not an unprimeable number, because it can be changed into a prime (205648979) 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, 11163 + ... + 23149.

It is an arithmetic number, because the mean of its divisors is an integer number (29999970).

Almost surely, 2^205648972 is an apocalyptic number.

It is an amenable number.

205648972 is a deficient number, since it is larger than the sum of its proper divisors (154350668).

205648972 is a wasteful number, since it uses less digits than its factorization.

205648972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16280 (or 16278 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 43.

The square root of 205648972 is about 14340.4662406771. The cubic root of 205648972 is about 590.2584063899.

The spelling of 205648972 in words is "two hundred five million, six hundred forty-eight thousand, nine hundred seventy-two".