238728535 has 8 divisors (see below), whose sum is σ = 303325776. Its totient is φ = 179748480.

The previous prime is 238728517. The next prime is 238728547. The reversal of 238728535 is 535827832.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 238728535 - 2¹⁵ = 238695767 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 238728491 and 238728500.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1404201 + ... + 1404370.

It is an arithmetic number, because the mean of its divisors is an integer number (37915722).

Almost surely, 2^238728535 is an apocalyptic number.

238728535 is a deficient number, since it is larger than the sum of its proper divisors (64597241).

238728535 is a wasteful number, since it uses less digits than its factorization.

238728535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2808593.

The product of its digits is 403200, while the sum is 43.

The square root of 238728535 is about 15450.8425336614. The cubic root of 238728535 is about 620.3471304449.

The spelling of 238728535 in words is "two hundred thirty-eight million, seven hundred twenty-eight thousand, five hundred thirty-five".