1012780 has 24 divisors (see below), whose sum is σ = 2157120. Its totient is φ = 399360.

The previous prime is 1012771. The next prime is 1012789. The reversal of 1012780 is 872101.

It is an interprime number because it is at equal distance from previous prime (1012771) and next prime (1012789).

It is not an unprimeable number, because it can be changed into a prime (1012789) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1260 + ... + 1900.

It is an arithmetic number, because the mean of its divisors is an integer number (89880).

2^1012780 is an apocalyptic number.

1012780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1012780 is an abundant number, since it is smaller than the sum of its proper divisors (1144340).

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

1012780 is a wasteful number, since it uses less digits than its factorization.

1012780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 729 (or 727 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 19.

The square root of 1012780 is about 1006.3697133758. The cubic root of 1012780 is about 100.4241980160.

Adding to 1012780 its reverse (872101), we get a palindrome (1884881).

The spelling of 1012780 in words is "one million, twelve thousand, seven hundred eighty".