210020994 has 12 divisors (see below), whose sum is σ = 455045526. Its totient is φ = 70006992.

The previous prime is 210020989. The next prime is 210021047. The reversal of 210020994 is 499020012.

It can be written as a sum of positive squares in only one way, i.e., 189200025 + 20820969 = 13755^2 + 4563^2 .

It is a super-3 number, since 3×210020994³ (a number of 26 digits) contains 333 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5833899 + ... + 5833934.

Almost surely, 2^210020994 is an apocalyptic number.

210020994 is an abundant number, since it is smaller than the sum of its proper divisors (245024532).

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

210020994 is a wasteful number, since it uses less digits than its factorization.

210020994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11667841 (or 11667838 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 210020994 is about 14492.1010899041. The cubic root of 210020994 is about 594.4120020286.

The spelling of 210020994 in words is "two hundred ten million, twenty thousand, nine hundred ninety-four".