238006890 has 128 divisors (see below), whose sum is σ = 698941440. Its totient is φ = 57153600.

The previous prime is 238006889. The next prime is 238006907. The reversal of 238006890 is 98600832.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 376875 + ... + 377505.

It is an arithmetic number, because the mean of its divisors is an integer number (5460480).

Almost surely, 2^238006890 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 238006890, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (349470720).

238006890 is an abundant number, since it is smaller than the sum of its proper divisors (460934550).

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

238006890 is a wasteful number, since it uses less digits than its factorization.

238006890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 785 (or 779 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 238006890 is about 15427.4719251081. The cubic root of 238006890 is about 619.7214235836.

The spelling of 238006890 in words is "two hundred thirty-eight million, six thousand, eight hundred ninety".