210011994 has 32 divisors (see below), whose sum is σ = 467173440. Its totient is φ = 69932016.

The previous prime is 210011981. The next prime is 210012013. The reversal of 210011994 is 499110012.

210011994 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 88852 + ... + 91184.

It is an arithmetic number, because the mean of its divisors is an integer number (14599170).

Almost surely, 2^210011994 is an apocalyptic number.

210011994 is an abundant number, since it is smaller than the sum of its proper divisors (257161446).

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

210011994 is a wasteful number, since it uses less digits than its factorization.

210011994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4011 (or 4005 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 27.

The square root of 210011994 is about 14491.7905725966. The cubic root of 210011994 is about 594.4035111561.

The spelling of 210011994 in words is "two hundred ten million, eleven thousand, nine hundred ninety-four".