879782220 has 72 divisors (see below), whose sum is σ = 2672547696. Its totient is φ = 234268032.

The previous prime is 879782191. The next prime is 879782227. The reversal of 879782220 is 22287978.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (879782227) 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 23 ways as a sum of consecutive naturals, for example, 135979 + ... + 142301.

It is an arithmetic number, because the mean of its divisors is an integer number (37118718).

Almost surely, 2^879782220 is an apocalyptic number.

It is an amenable number.

879782220 is an abundant number, since it is smaller than the sum of its proper divisors (1792765476).

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

879782220 is a wasteful number, since it uses less digits than its factorization.

879782220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7111 (or 7106 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 45.

The square root of 879782220 is about 29661.1230401008. The cubic root of 879782220 is about 958.2049137226.

The spelling of 879782220 in words is "eight hundred seventy-nine million, seven hundred eighty-two thousand, two hundred twenty".