10780020 has 48 divisors (see below), whose sum is σ = 33539520. Its totient is φ = 2874528.

The previous prime is 10779997. The next prime is 10780027. The reversal of 10780020 is 2008701.

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

It is a junction number, because it is equal to n+sod(n) for n = 10779975 and 10780002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10780027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9442 + ... + 10521.

It is an arithmetic number, because the mean of its divisors is an integer number (698740).

Almost surely, 2^10780020 is an apocalyptic number.

10780020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10780020 is an abundant number, since it is smaller than the sum of its proper divisors (22759500).

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

10780020 is a wasteful number, since it uses less digits than its factorization.

10780020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19981 (or 19973 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 18.

The square root of 10780020 is about 3283.2940775995. The cubic root of 10780020 is about 220.9054966092.

Adding to 10780020 its reverse (2008701), we get a palindrome (12788721).

The spelling of 10780020 in words is "ten million, seven hundred eighty thousand, twenty".