85784238 has 16 divisors (see below), whose sum is σ = 190631760. Its totient is φ = 28594728.

The previous prime is 85784201. The next prime is 85784243. The reversal of 85784238 is 83248758.

85784238 is a `hidden beast` number, since 8 + 578 + 42 + 38 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 85784193 and 85784202.

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, 794245 + ... + 794352.

It is an arithmetic number, because the mean of its divisors is an integer number (11914485).

Almost surely, 2^85784238 is an apocalyptic number.

85784238 is an abundant number, since it is smaller than the sum of its proper divisors (104847522).

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

85784238 is a wasteful number, since it uses less digits than its factorization.

85784238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1588608 (or 1588602 counting only the distinct ones).

The product of its digits is 430080, while the sum is 45.

The square root of 85784238 is about 9261.9780824617. The cubic root of 85784238 is about 441.0310496904.

The spelling of 85784238 in words is "eighty-five million, seven hundred eighty-four thousand, two hundred thirty-eight".