238222890 has 64 divisors (see below), whose sum is σ = 637528320. Its totient is φ = 63299520.

The previous prime is 238222877. The next prime is 238222927. The reversal of 238222890 is 98222832.

238222890 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 82552 + ... + 85388.

It is an arithmetic number, because the mean of its divisors is an integer number (9961380).

Almost surely, 2^238222890 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 238222890, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (318764160).

238222890 is an abundant number, since it is smaller than the sum of its proper divisors (399305430).

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

238222890 is a wasteful number, since it uses less digits than its factorization.

238222890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3164 (or 3158 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 238222890 is about 15434.4708364103. The cubic root of 238222890 is about 619.9088402220.

The spelling of 238222890 in words is "two hundred thirty-eight million, two hundred twenty-two thousand, eight hundred ninety".