1012204800 has 162 divisors, whose sum is σ = 3619066542. Its totient is φ = 269905920.

The previous prime is 1012204799. The next prime is 1012204873. The reversal of 1012204800 is 84022101.

It can be written as a sum of positive squares in 3 ways, for example, as 120824064 + 891380736 = 10992^2 + 29856^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 48814 + ... + 66386.

Almost surely, 2^1012204800 is an apocalyptic number.

1012204800 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 1012204800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1809533271).

1012204800 is an abundant number, since it is smaller than the sum of its proper divisors (2606861742).

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

1012204800 is a wasteful number, since it uses less digits than its factorization.

1012204800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17605 (or 17583 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

The square root of 1012204800 is about 31815.1661947569. The cubic root of 1012204800 is about 1004.0518271897.

Adding to 1012204800 its reverse (84022101), we get a palindrome (1096226901).

The spelling of 1012204800 in words is "one billion, twelve million, two hundred four thousand, eight hundred".