85382138 has 4 divisors (see below), whose sum is σ = 128073210. Its totient is φ = 42691068.

The previous prime is 85382137. The next prime is 85382147. The reversal of 85382138 is 83128358.

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

It can be written as a sum of positive squares in only one way, i.e., 57047809 + 28334329 = 7553^2 + 5323^2 .

It is not an unprimeable number, because it can be changed into a prime (85382137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21345533 + ... + 21345536.

Almost surely, 2^85382138 is an apocalyptic number.

85382138 is a deficient number, since it is larger than the sum of its proper divisors (42691072).

85382138 is a wasteful number, since it uses less digits than its factorization.

85382138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42691071.

The product of its digits is 46080, while the sum is 38.

The square root of 85382138 is about 9240.2455595076. The cubic root of 85382138 is about 440.3408825331.

The spelling of 85382138 in words is "eighty-five million, three hundred eighty-two thousand, one hundred thirty-eight".