210038890 has 12 divisors (see below), whose sum is σ = 378152514. Its totient is φ = 83997224.

The previous prime is 210038867. The next prime is 210038897. The reversal of 210038890 is 98830012.

210038890 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 189035001 + 21003889 = 13749^2 + 4583^2 .

It is not an unprimeable number, because it can be changed into a prime (210038897) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 43539 + ... + 48121.

Almost surely, 2^210038890 is an apocalyptic number.

210038890 is a deficient number, since it is larger than the sum of its proper divisors (168113624).

210038890 is an frugal number, since it uses more digits than its factorization.

210038890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9173 (or 4590 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 210038890 is about 14492.7185165517. The cubic root of 210038890 is about 594.4288849361.

The spelling of 210038890 in words is "two hundred ten million, thirty-eight thousand, eight hundred ninety".