85133940 has 48 divisors (see below), whose sum is σ = 238918848. Its totient is φ = 22650624.

The previous prime is 85133933. The next prime is 85133941. The reversal of 85133940 is 4933158.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85133941) 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, 30024 + ... + 32736.

It is an arithmetic number, because the mean of its divisors is an integer number (4977476).

Almost surely, 2^85133940 is an apocalyptic number.

It is an amenable number.

85133940 is an abundant number, since it is smaller than the sum of its proper divisors (153784908).

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

85133940 is a wasteful number, since it uses less digits than its factorization.

85133940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3248 (or 3246 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 85133940 is about 9226.8055143695. The cubic root of 85133940 is about 439.9137916504.

The spelling of 85133940 in words is "eighty-five million, one hundred thirty-three thousand, nine hundred forty".