85782216 has 32 divisors (see below), whose sum is σ = 230952960. Its totient is φ = 26394432.

The previous prime is 85782199. The next prime is 85782233. The reversal of 85782216 is 61228758.

It is an interprime number because it is at equal distance from previous prime (85782199) and next prime (85782233).

It is a Harshad number since it is a multiple of its sum of digits (39).

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, 137160 + ... + 137783.

It is an arithmetic number, because the mean of its divisors is an integer number (7217280).

Almost surely, 2^85782216 is an apocalyptic number.

It is an amenable number.

85782216 is an abundant number, since it is smaller than the sum of its proper divisors (145170744).

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

85782216 is a wasteful number, since it uses less digits than its factorization.

85782216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274965 (or 274961 counting only the distinct ones).

The product of its digits is 53760, while the sum is 39.

The square root of 85782216 is about 9261.8689258702. The cubic root of 85782216 is about 441.0275845169.

The spelling of 85782216 in words is "eighty-five million, seven hundred eighty-two thousand, two hundred sixteen".