238866620 has 48 divisors (see below), whose sum is σ = 521186400. Its totient is φ = 91848960.

The previous prime is 238866619. The next prime is 238866623. The reversal of 238866620 is 26668832.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (238866623) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 155255 + ... + 156785.

It is an arithmetic number, because the mean of its divisors is an integer number (10858050).

Almost surely, 2^238866620 is an apocalyptic number.

238866620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 238866620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (260593200).

238866620 is an abundant number, since it is smaller than the sum of its proper divisors (282319780).

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

238866620 is a wasteful number, since it uses less digits than its factorization.

238866620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1838 (or 1836 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 41.

The square root of 238866620 is about 15455.3104142233. The cubic root of 238866620 is about 620.4667141426.

The spelling of 238866620 in words is "two hundred thirty-eight million, eight hundred sixty-six thousand, six hundred twenty".