85031378 has 8 divisors (see below), whose sum is σ = 127625868. Its totient is φ = 42489424.

The previous prime is 85031371. The next prime is 85031381. The reversal of 85031378 is 87313058.

It can be written as a sum of positive squares in 2 ways, for example, as 74874409 + 10156969 = 8653^2 + 3187^2 .

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

It is a super-4 number, since 4×85031378⁴ (a number of 33 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (85031371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8801 + ... + 15732.

Almost surely, 2^85031378 is an apocalyptic number.

85031378 is a deficient number, since it is larger than the sum of its proper divisors (42594490).

85031378 is a wasteful number, since it uses less digits than its factorization.

85031378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26268.

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 85031378 is about 9221.2460112503. The cubic root of 85031378 is about 439.7370639799.

The spelling of 85031378 in words is "eighty-five million, thirty-one thousand, three hundred seventy-eight".