85257400 has 24 divisors (see below), whose sum is σ = 198223920. Its totient is φ = 34102880.

The previous prime is 85257379. The next prime is 85257401. The reversal of 85257400 is 475258.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85257401) 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 5 ways as a sum of consecutive naturals, for example, 212944 + ... + 213343.

It is an arithmetic number, because the mean of its divisors is an integer number (8259330).

Almost surely, 2^85257400 is an apocalyptic number.

It is an amenable number.

85257400 is an abundant number, since it is smaller than the sum of its proper divisors (112966520).

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

85257400 is a wasteful number, since it uses less digits than its factorization.

85257400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 426303 (or 426294 counting only the distinct ones).

The product of its (nonzero) digits is 11200, while the sum is 31.

The square root of 85257400 is about 9233.4933800810. The cubic root of 85257400 is about 440.1263411295.

The spelling of 85257400 in words is "eighty-five million, two hundred fifty-seven thousand, four hundred".