85287293 has 32 divisors (see below), whose sum is σ = 110745600. Its totient is φ = 65197440.

The previous prime is 85287277. The next prime is 85287299. The reversal of 85287293 is 39278258.

It is not a de Polignac number, because 85287293 - 2⁴ = 85287277 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85287299) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 137921 + ... + 138537.

It is an arithmetic number, because the mean of its divisors is an integer number (3460800).

Almost surely, 2^85287293 is an apocalyptic number.

It is an amenable number.

85287293 is a deficient number, since it is larger than the sum of its proper divisors (25458307).

85287293 is a wasteful number, since it uses less digits than its factorization.

85287293 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 682 (or 668 counting only the distinct ones).

The product of its digits is 241920, while the sum is 44.

The square root of 85287293 is about 9235.1119646705. Note that the first 3 decimals coincide. The cubic root of 85287293 is about 440.1777742382.

The spelling of 85287293 in words is "eighty-five million, two hundred eighty-seven thousand, two hundred ninety-three".