238503540 has 192 divisors, whose sum is σ = 799061760. Its totient is φ = 52469760.

The previous prime is 238503497. The next prime is 238503541. The reversal of 238503540 is 45305832.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 238503498 and 238503507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (238503541) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 325014 + ... + 325746.

It is an arithmetic number, because the mean of its divisors is an integer number (4161780).

Almost surely, 2^238503540 is an apocalyptic number.

238503540 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 238503540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (399530880).

238503540 is an abundant number, since it is smaller than the sum of its proper divisors (560558220).

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

238503540 is a wasteful number, since it uses less digits than its factorization.

238503540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 802 (or 800 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 30.

The square root of 238503540 is about 15443.5598227870. The cubic root of 238503540 is about 620.1521825527.

The spelling of 238503540 in words is "two hundred thirty-eight million, five hundred three thousand, five hundred forty".