84227780 has 48 divisors (see below), whose sum is σ = 217701120. Its totient is φ = 26656128.

The previous prime is 84227761. The next prime is 84227791. The reversal of 84227780 is 8772248.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21320 + ... + 24959.

It is an arithmetic number, because the mean of its divisors is an integer number (4535440).

Almost surely, 2^84227780 is an apocalyptic number.

It is an amenable number.

84227780 is an abundant number, since it is smaller than the sum of its proper divisors (133473340).

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

84227780 is a wasteful number, since it uses less digits than its factorization.

84227780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46308 (or 46306 counting only the distinct ones).

The product of its (nonzero) digits is 50176, while the sum is 38.

The square root of 84227780 is about 9177.5693949978. The cubic root of 84227780 is about 438.3474165824.

The spelling of 84227780 in words is "eighty-four million, two hundred twenty-seven thousand, seven hundred eighty".