85144748 has 24 divisors (see below), whose sum is σ = 160947360. Its totient is φ = 39179520.

The previous prime is 85144747. The next prime is 85144769. The reversal of 85144748 is 84744158.

It is a super-2 number, since 2×85144748² = 14499256223967008, which contains 22 as substring.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (85144747) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16388 + ... + 20948.

It is an arithmetic number, because the mean of its divisors is an integer number (6706140).

Almost surely, 2^85144748 is an apocalyptic number.

It is an amenable number.

85144748 is a deficient number, since it is larger than the sum of its proper divisors (75802612).

85144748 is a wasteful number, since it uses less digits than its factorization.

85144748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4937 (or 4935 counting only the distinct ones).

The product of its digits is 143360, while the sum is 41.

The square root of 85144748 is about 9227.3911806100. The cubic root of 85144748 is about 439.9324069722.

The spelling of 85144748 in words is "eighty-five million, one hundred forty-four thousand, seven hundred forty-eight".