208831072 has 12 divisors (see below), whose sum is σ = 411136236. Its totient is φ = 104415520.

The previous prime is 208831069. The next prime is 208831087. The reversal of 208831072 is 270138802.

It is a super-2 number, since 2×208831072² = 87220833265338368, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3262954 + ... + 3263017.

It is an arithmetic number, because the mean of its divisors is an integer number (34261353).

Almost surely, 2^208831072 is an apocalyptic number.

It is an amenable number.

208831072 is a deficient number, since it is larger than the sum of its proper divisors (202305164).

208831072 is an equidigital number, since it uses as much as digits as its factorization.

208831072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6525981 (or 6525973 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 31.

The square root of 208831072 is about 14450.9886167002. The cubic root of 208831072 is about 593.2872828236.

Adding to 208831072 its reverse (270138802), we get a palindrome (478969874).

The spelling of 208831072 in words is "two hundred eight million, eight hundred thirty-one thousand, seventy-two".