206666432 has 28 divisors (see below), whose sum is σ = 468690960. Its totient is φ = 88571136.

The previous prime is 206666413. The next prime is 206666437. The reversal of 206666432 is 234666602.

It is a tau number, because it is divible by the number of its divisors (28).

It is a super-2 number, since 2×206666432² = 85422028231221248, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 206666392 and 206666401.

It is not an unprimeable number, because it can be changed into a prime (206666437) 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, 230207 + ... + 231102.

Almost surely, 2^206666432 is an apocalyptic number.

It is an amenable number.

206666432 is an abundant number, since it is smaller than the sum of its proper divisors (262024528).

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

206666432 is an equidigital number, since it uses as much as digits as its factorization.

206666432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 461328 (or 461318 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 35.

The square root of 206666432 is about 14375.8976067583. The cubic root of 206666432 is about 591.2302510884.

The spelling of 206666432 in words is "two hundred six million, six hundred sixty-six thousand, four hundred thirty-two".