1220072070 has 96 divisors (see below), whose sum is σ = 3414380256. Its totient is φ = 278208000.

The previous prime is 1220072057. The next prime is 1220072071. The reversal of 1220072070 is 702700221.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220072071) 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 47 ways as a sum of consecutive naturals, for example, 882780 + ... + 884160.

It is an arithmetic number, because the mean of its divisors is an integer number (35566461).

Almost surely, 2^1220072070 is an apocalyptic number.

1220072070 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 1220072070, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1707190128).

1220072070 is an abundant number, since it is smaller than the sum of its proper divisors (2194308186).

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

1220072070 is a wasteful number, since it uses less digits than its factorization.

1220072070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2006 (or 1999 counting only the distinct ones).

The product of its (nonzero) digits is 392, while the sum is 21.

The square root of 1220072070 is about 34929.5300569590. The cubic root of 1220072070 is about 1068.5507704279.

Adding to 1220072070 its reverse (702700221), we get a palindrome (1922772291).

The spelling of 1220072070 in words is "one billion, two hundred twenty million, seventy-two thousand, seventy".