85747144 has 16 divisors (see below), whose sum is σ = 183744000. Its totient is φ = 36748752.

The previous prime is 85747091. The next prime is 85747213. The reversal of 85747144 is 44174758.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 85747097 and 85747106.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 765544 + ... + 765655.

It is an arithmetic number, because the mean of its divisors is an integer number (11484000).

Almost surely, 2^85747144 is an apocalyptic number.

It is an amenable number.

85747144 is an abundant number, since it is smaller than the sum of its proper divisors (97996856).

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

85747144 is a wasteful number, since it uses less digits than its factorization.

85747144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1531212 (or 1531208 counting only the distinct ones).

The product of its digits is 125440, while the sum is 40.

The square root of 85747144 is about 9259.9753779370. The cubic root of 85747144 is about 440.9674717156.

The spelling of 85747144 in words is "eighty-five million, seven hundred forty-seven thousand, one hundred forty-four".