85858380 has 60 divisors (see below), whose sum is σ = 269346000. Its totient is φ = 22895136.

The previous prime is 85858373. The next prime is 85858411. The reversal of 85858380 is 8385858.

It is a tau number, because it is divible by the number of its divisors (60).

It is a super-2 number, since 2×85858380² = 14743322832448800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 24880 + ... + 28119.

It is an arithmetic number, because the mean of its divisors is an integer number (4489100).

Almost surely, 2^85858380 is an apocalyptic number.

It is an amenable number.

85858380 is an abundant number, since it is smaller than the sum of its proper divisors (183487620).

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

85858380 is a wasteful number, since it uses less digits than its factorization.

85858380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53020 (or 53009 counting only the distinct ones).

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

The square root of 85858380 is about 9265.9797107483. The cubic root of 85858380 is about 441.1580718915.

The spelling of 85858380 in words is "eighty-five million, eight hundred fifty-eight thousand, three hundred eighty".