238856540 has 24 divisors (see below), whose sum is σ = 540183840. Its totient is φ = 88193088.

The previous prime is 238856539. The next prime is 238856549. The reversal of 238856540 is 45658832.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (238856549) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 459080 + ... + 459599.

It is an arithmetic number, because the mean of its divisors is an integer number (22507660).

Almost surely, 2^238856540 is an apocalyptic number.

238856540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

238856540 is an abundant number, since it is smaller than the sum of its proper divisors (301327300).

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

238856540 is a wasteful number, since it uses less digits than its factorization.

238856540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 918701 (or 918699 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 41.

The square root of 238856540 is about 15454.9843092771. The cubic root of 238856540 is about 620.4579862698.

The spelling of 238856540 in words is "two hundred thirty-eight million, eight hundred fifty-six thousand, five hundred forty".