1220895030 has 64 divisors (see below), whose sum is σ = 2999255040. Its totient is φ = 317925504.

The previous prime is 1220895019. The next prime is 1220895037. The reversal of 1220895030 is 305980221.

It is a happy number.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220895037) 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 31 ways as a sum of consecutive naturals, for example, 953931 + ... + 955209.

It is an arithmetic number, because the mean of its divisors is an integer number (46863360).

Almost surely, 2^1220895030 is an apocalyptic number.

1220895030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1220895030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1499627520).

1220895030 is an abundant number, since it is smaller than the sum of its proper divisors (1778360010).

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

1220895030 is a wasteful number, since it uses less digits than its factorization.

1220895030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2013.

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 1220895030 is about 34941.3083613078. The cubic root of 1220895030 is about 1068.7909685058.

The spelling of 1220895030 in words is "one billion, two hundred twenty million, eight hundred ninety-five thousand, thirty".