135570238 has 4 divisors (see below), whose sum is σ = 203355360. Its totient is φ = 67785118.

The previous prime is 135570217. The next prime is 135570251. The reversal of 135570238 is 832075531.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33892558 + ... + 33892561.

It is an arithmetic number, because the mean of its divisors is an integer number (50838840).

Almost surely, 2^135570238 is an apocalyptic number.

135570238 is a deficient number, since it is larger than the sum of its proper divisors (67785122).

135570238 is an equidigital number, since it uses as much as digits as its factorization.

135570238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67785121.

The product of its (nonzero) digits is 25200, while the sum is 34.

The square root of 135570238 is about 11643.4633163849. The cubic root of 135570238 is about 513.7140607068.

The spelling of 135570238 in words is "one hundred thirty-five million, five hundred seventy thousand, two hundred thirty-eight".