85133340 has 36 divisors (see below), whose sum is σ = 258238344. Its totient is φ = 22702176.

The previous prime is 85133339. The next prime is 85133351. The reversal of 85133340 is 4333158.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 236302 + ... + 236661.

Almost surely, 2^85133340 is an apocalyptic number.

It is an amenable number.

85133340 is an abundant number, since it is smaller than the sum of its proper divisors (173105004).

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

85133340 is a wasteful number, since it uses less digits than its factorization.

85133340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 472978 (or 472973 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 85133340 is about 9226.7730003507. The cubic root of 85133340 is about 439.9127581852.

Adding to 85133340 its reverse (4333158), we get a palindrome (89466498).

It can be divided in two parts, 851 and 33340, that added together give a triangular number (34191 = T₂₆₁).

The spelling of 85133340 in words is "eighty-five million, one hundred thirty-three thousand, three hundred forty".