1028346332220 has 144 divisors (see below), whose sum is σ = 3160231925760. Its totient is φ = 270631939968.

The previous prime is 1028346332213. The next prime is 1028346332239. The reversal of 1028346332220 is 222336438201.

1028346332220 is a `hidden beast` number, since 1 + 0 + 283 + 46 + 332 + 2 + 2 + 0 = 666.

It is a super-2 number, since 2×1028346332220² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 33871087 + ... + 33901433.

It is an arithmetic number, because the mean of its divisors is an integer number (21946055040).

Almost surely, 2^{1028346332220} is an apocalyptic number.

1028346332220 is a gapful number since it is divisible by the number (10) 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 1028346332220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1580115962880).

1028346332220 is an abundant number, since it is smaller than the sum of its proper divisors (2131885593540).

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

1028346332220 is a wasteful number, since it uses less digits than its factorization.

1028346332220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32824 (or 32819 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 36.

The spelling of 1028346332220 in words is "one trillion, twenty-eight billion, three hundred forty-six million, three hundred thirty-two thousand, two hundred twenty".