1220026752 has 512 divisors, whose sum is σ = 4465152000. Its totient is φ = 320495616.

The previous prime is 1220026741. The next prime is 1220026757. The reversal of 1220026752 is 2576200221.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220026757) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 25957993 + ... + 25958039.

It is an arithmetic number, because the mean of its divisors is an integer number (8721000).

Almost surely, 2^1220026752 is an apocalyptic number.

1220026752 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1220026752, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2232576000).

1220026752 is an abundant number, since it is smaller than the sum of its proper divisors (3245125248).

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

1220026752 is a wasteful number, since it uses less digits than its factorization.

1220026752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143 (or 125 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 1220026752 is about 34928.8813448126. The cubic root of 1220026752 is about 1068.5375402851.

Adding to 1220026752 its reverse (2576200221), we get a palindrome (3796226973).

The spelling of 1220026752 in words is "one billion, two hundred twenty million, twenty-six thousand, seven hundred fifty-two".