1220679210 has 32 divisors (see below), whose sum is σ = 3008812032. Its totient is φ = 316716480.

The previous prime is 1220679193. The next prime is 1220679217. The reversal of 1220679210 is 129760221.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (1220679217) by changing a digit.

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, 548746 + ... + 550965.

It is an arithmetic number, because the mean of its divisors is an integer number (94025376).

Almost surely, 2^1220679210 is an apocalyptic number.

1220679210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1220679210 is an abundant number, since it is smaller than the sum of its proper divisors (1788132822).

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

1220679210 is a wasteful number, since it uses less digits than its factorization.

1220679210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1099758.

The product of its (nonzero) digits is 3024, while the sum is 30.

The square root of 1220679210 is about 34938.2199031376. The cubic root of 1220679210 is about 1068.7279873719.

The spelling of 1220679210 in words is "one billion, two hundred twenty million, six hundred seventy-nine thousand, two hundred ten".