85224638 has 16 divisors (see below), whose sum is σ = 135665280. Its totient is φ = 40014336.

The previous prime is 85224599. The next prime is 85224641. The reversal of 85224638 is 83642258.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13670 + ... + 18902.

It is an arithmetic number, because the mean of its divisors is an integer number (8479080).

Almost surely, 2^85224638 is an apocalyptic number.

85224638 is a deficient number, since it is larger than the sum of its proper divisors (50440642).

85224638 is a wasteful number, since it uses less digits than its factorization.

85224638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5731.

The product of its digits is 92160, while the sum is 38.

The square root of 85224638 is about 9231.7191248434. The cubic root of 85224638 is about 440.0699578847.

The spelling of 85224638 in words is "eighty-five million, two hundred twenty-four thousand, six hundred thirty-eight".