206971972 has 12 divisors (see below), whose sum is σ = 364225680. Its totient is φ = 102907496.

The previous prime is 206971937. The next prime is 206971979. The reversal of 206971972 is 279179602.

It is not an unprimeable number, because it can be changed into a prime (206971979) 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, 143818 + ... + 145249.

It is an arithmetic number, because the mean of its divisors is an integer number (30352140).

Almost surely, 2^206971972 is an apocalyptic number.

It is an amenable number.

206971972 is a deficient number, since it is larger than the sum of its proper divisors (157253708).

206971972 is a wasteful number, since it uses less digits than its factorization.

206971972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289250 (or 289248 counting only the distinct ones).

The product of its (nonzero) digits is 95256, while the sum is 43.

The square root of 206971972 is about 14386.5204966316. The cubic root of 206971972 is about 591.5214700337.

The spelling of 206971972 in words is "two hundred six million, nine hundred seventy-one thousand, nine hundred seventy-two".