85278933 has 16 divisors (see below), whose sum is σ = 129279040. Its totient is φ = 55529712.

The previous prime is 85278929. The next prime is 85278971. The reversal of 85278933 is 33987258.

It is not a de Polignac number, because 85278933 - 2² = 85278929 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85278833) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 35566 + ... + 37887.

It is an arithmetic number, because the mean of its divisors is an integer number (8079940).

Almost surely, 2^85278933 is an apocalyptic number.

It is an amenable number.

85278933 is a deficient number, since it is larger than the sum of its proper divisors (44000107).

85278933 is a wasteful number, since it uses less digits than its factorization.

85278933 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73505 (or 73499 counting only the distinct ones).

The product of its digits is 362880, while the sum is 45.

The square root of 85278933 is about 9234.6593331860. The cubic root of 85278933 is about 440.1633914530.

The spelling of 85278933 in words is "eighty-five million, two hundred seventy-eight thousand, nine hundred thirty-three".