208991152 has 10 divisors (see below), whose sum is σ = 404920388. Its totient is φ = 104495568.

The previous prime is 208991129. The next prime is 208991161. The reversal of 208991152 is 251199802.

It is a super-2 number, since 2×208991152² = 87354603228574208, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6530958 + ... + 6530989.

Almost surely, 2^208991152 is an apocalyptic number.

It is an amenable number.

208991152 is a deficient number, since it is larger than the sum of its proper divisors (195929236).

208991152 is a wasteful number, since it uses less digits than its factorization.

208991152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13061955 (or 13061949 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 37.

The square root of 208991152 is about 14456.5262770833. The cubic root of 208991152 is about 593.4388394067.

The spelling of 208991152 in words is "two hundred eight million, nine hundred ninety-one thousand, one hundred fifty-two".