238253905 has 8 divisors (see below), whose sum is σ = 288156672. Its totient is φ = 189101808.

The previous prime is 238253893. The next prime is 238253909. The reversal of 238253905 is 509352832.

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

It is a cyclic number.

It is not a de Polignac number, because 238253905 - 2¹¹ = 238251857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (238253909) 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, 186967 + ... + 188236.

It is an arithmetic number, because the mean of its divisors is an integer number (36019584).

Almost surely, 2^238253905 is an apocalyptic number.

It is an amenable number.

238253905 is a deficient number, since it is larger than the sum of its proper divisors (49902767).

238253905 is a wasteful number, since it uses less digits than its factorization.

238253905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 375335.

The product of its (nonzero) digits is 64800, while the sum is 37.

The square root of 238253905 is about 15435.4755352726. The cubic root of 238253905 is about 619.9357416928.

It can be divided in two parts, 23825 and 3905, that added together give a triangular number (27730 = T₂₃₅).

The spelling of 238253905 in words is "two hundred thirty-eight million, two hundred fifty-three thousand, nine hundred five".