133210816 has 28 divisors (see below), whose sum is σ = 264965688. Its totient is φ = 66447872.

The previous prime is 133210801. The next prime is 133210817. The reversal of 133210816 is 618012331.

It is not an unprimeable number, because it can be changed into a prime (133210817) 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, 27660 + ... + 32116.

Almost surely, 2^133210816 is an apocalyptic number.

133210816 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

133210816 is a deficient number, since it is larger than the sum of its proper divisors (131754872).

133210816 is an equidigital number, since it uses as much as digits as its factorization.

133210816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4936 (or 4926 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 133210816 is about 11541.6990083783. The cubic root of 133210816 is about 510.7164299964.

The spelling of 133210816 in words is "one hundred thirty-three million, two hundred ten thousand, eight hundred sixteen".