85058388 has 18 divisors (see below), whose sum is σ = 215008794. Its totient is φ = 28352784.

The previous prime is 85058387. The next prime is 85058399. The reversal of 85058388 is 88385058.

It can be written as a sum of positive squares in only one way, i.e., 66292164 + 18766224 = 8142^2 + 4332^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85058387) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1181331 + ... + 1181402.

It is an arithmetic number, because the mean of its divisors is an integer number (11944933).

Almost surely, 2^85058388 is an apocalyptic number.

It is an amenable number.

85058388 is an abundant number, since it is smaller than the sum of its proper divisors (129950406).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

85058388 is a wasteful number, since it uses less digits than its factorization.

85058388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2362743 (or 2362738 counting only the distinct ones).

The product of its (nonzero) digits is 307200, while the sum is 45.

The square root of 85058388 is about 9222.7104475854. The cubic root of 85058388 is about 439.7836195025.

The spelling of 85058388 in words is "eighty-five million, fifty-eight thousand, three hundred eighty-eight".