1102816820 has 96 divisors (see below), whose sum is σ = 2733884160. Its totient is φ = 365783040.

The previous prime is 1102816817. The next prime is 1102816837. The reversal of 1102816820 is 286182011.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1092476 + ... + 1093484.

It is an arithmetic number, because the mean of its divisors is an integer number (28477960).

Almost surely, 2^1102816820 is an apocalyptic number.

1102816820 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 1102816820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1366942080).

1102816820 is an abundant number, since it is smaller than the sum of its proper divisors (1631067340).

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

1102816820 is a wasteful number, since it uses less digits than its factorization.

1102816820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1273 (or 1271 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 29.

The square root of 1102816820 is about 33208.6859119719. The cubic root of 1102816820 is about 1033.1604999411.

Adding to 1102816820 its reverse (286182011), we get a palindrome (1388998831).

The spelling of 1102816820 in words is "one billion, one hundred two million, eight hundred sixteen thousand, eight hundred twenty".