1012807800 has 240 divisors, whose sum is σ = 3558198600. Its totient is φ = 266976000.

The previous prime is 1012807799. The next prime is 1012807823. The reversal of 1012807800 is 87082101.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 1635891 + ... + 1636509.

Almost surely, 2^1012807800 is an apocalyptic number.

1012807800 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 1012807800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1779099300).

1012807800 is an abundant number, since it is smaller than the sum of its proper divisors (2545390800).

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

1012807800 is a wasteful number, since it uses less digits than its factorization.

1012807800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 748 (or 730 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 27.

The square root of 1012807800 is about 31824.6413962514. The cubic root of 1012807800 is about 1004.2511686224.

Adding to 1012807800 its reverse (87082101), we get a palindrome (1099889901).

The spelling of 1012807800 in words is "one billion, twelve million, eight hundred seven thousand, eight hundred".