238226840 has 16 divisors (see below), whose sum is σ = 536010480. Its totient is φ = 95290720.

The previous prime is 238226839. The next prime is 238226843. The reversal of 238226840 is 48622832.

It is a self number, because there is not a number n which added to its sum of digits gives 238226840.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (238226843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2977796 + ... + 2977875.

It is an arithmetic number, because the mean of its divisors is an integer number (33500655).

Almost surely, 2^238226840 is an apocalyptic number.

238226840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

238226840 is an abundant number, since it is smaller than the sum of its proper divisors (297783640).

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

238226840 is a wasteful number, since it uses less digits than its factorization.

238226840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5955682 (or 5955678 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 35.

The square root of 238226840 is about 15434.5987962111. The cubic root of 238226840 is about 619.9122664620.

The spelling of 238226840 in words is "two hundred thirty-eight million, two hundred twenty-six thousand, eight hundred forty".