84772218 has 8 divisors (see below), whose sum is σ = 169544448. Its totient is φ = 28257404.

The previous prime is 84772213. The next prime is 84772223. The reversal of 84772218 is 81227748.

It is an interprime number because it is at equal distance from previous prime (84772213) and next prime (84772223).

It is a sphenic number, since it is the product of 3 distinct primes.

84772218 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (84772211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7064346 + ... + 7064357.

It is an arithmetic number, because the mean of its divisors is an integer number (21193056).

Almost surely, 2^84772218 is an apocalyptic number.

84772218 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

84772218 is a wasteful number, since it uses less digits than its factorization.

84772218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14128708.

The product of its digits is 50176, while the sum is 39.

The square root of 84772218 is about 9207.1829568006. The cubic root of 84772218 is about 439.2898634472.

The spelling of 84772218 in words is "eighty-four million, seven hundred seventy-two thousand, two hundred eighteen".