206912972 has 48 divisors (see below), whose sum is σ = 430768128. Its totient is φ = 85095360.

The previous prime is 206912971. The next prime is 206912987. The reversal of 206912972 is 279219602.

It is not an unprimeable number, because it can be changed into a prime (206912971) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 109298 + ... + 111174.

It is an arithmetic number, because the mean of its divisors is an integer number (8974336).

Almost surely, 2^206912972 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 206912972, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (215384064).

206912972 is an abundant number, since it is smaller than the sum of its proper divisors (223855156).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

206912972 is a wasteful number, since it uses less digits than its factorization.

206912972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2046 (or 2044 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 38.

The square root of 206912972 is about 14384.4698199134. The cubic root of 206912972 is about 591.4652577793.

The spelling of 206912972 in words is "two hundred six million, nine hundred twelve thousand, nine hundred seventy-two".